persistency/examples: Provide a integration example

[umaucher]

Show how to integrate score_persistency in a own standalone bazel workspace and showing the usage of the C++ implementation. Remove the previous pseudo code from the README.md and document the new solution instead.

[github-actions]

License Check Results

🚀 The license check job ran with the Bazel command:

bazel run //:license-check

Status: ⚠️ Needs Review

Click to expand output

[License Check Output]
2026/02/20 16:13:30 Downloading https://releases.bazel.build/8.4.2/release/bazel-8.4.2-linux-x86_64...
Extracting Bazel installation...
Starting local Bazel server (8.4.2) and connecting to it...
INFO: Invocation ID: 3245269e-5485-4bc7-a917-d285b98335fd
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
WARNING: For repository 'rules_python', the root module requires module version rules_python@1.4.1, but got rules_python@1.8.3 in the resolved dependency graph. Please update the version in your MODULE.bazel or set --check_direct_dependencies=off
WARNING: For repository 'rules_cc', the root module requires module version rules_cc@0.1.2, but got rules_cc@0.2.16 in the resolved dependency graph. Please update the version in your MODULE.bazel or set --check_direct_dependencies=off
WARNING: For repository 'googletest', the root module requires module version googletest@1.17.0.bcr.1, but got googletest@1.17.0.bcr.2 in the resolved dependency graph. Please update the version in your MODULE.bazel or set --check_direct_dependencies=off
WARNING: For repository 'google_benchmark', the root module requires module version google_benchmark@1.9.4, but got google_benchmark@1.9.5 in the resolved dependency graph. Please update the version in your MODULE.bazel or set --check_direct_dependencies=off
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Loading: 
Loading: 2 packages loaded
Loading: 2 packages loaded
    currently loading: 
Loading: 2 packages loaded
    currently loading: 
Analyzing: target //:license-check (3 packages loaded, 0 targets configured)
Analyzing: target //:license-check (3 packages loaded, 0 targets configured)

Analyzing: target //:license-check (51 packages loaded, 10 targets configured)

Analyzing: target //:license-check (82 packages loaded, 10 targets configured)

Analyzing: target //:license-check (85 packages loaded, 10 targets configured)

Analyzing: target //:license-check (139 packages loaded, 612 targets configured)

Analyzing: target //:license-check (154 packages loaded, 2259 targets configured)

Analyzing: target //:license-check (159 packages loaded, 2308 targets configured)

Analyzing: target //:license-check (164 packages loaded, 3638 targets configured)

Analyzing: target //:license-check (165 packages loaded, 5418 targets configured)

Analyzing: target //:license-check (166 packages loaded, 5426 targets configured)

Analyzing: target //:license-check (169 packages loaded, 5562 targets configured)
[8 / 17] Creating runfiles tree bazel-out/k8-opt-exec-ST-d57f47055a04/bin/external/score_tooling+/dash/tool/formatters/dash_format_converter.runfiles [for tool]; 0s local
Analyzing: target //:license-check (191 packages loaded, 5630 targets configured)
[13 / 17] JavaToolchainCompileClasses external/rules_java+/toolchains/platformclasspath_classes; 0s disk-cache, processwrapper-sandbox ... (2 actions, 1 running)
Analyzing: target //:license-check (193 packages loaded, 5638 targets configured)
[13 / 17] JavaToolchainCompileClasses external/rules_java+/toolchains/platformclasspath_classes; 1s disk-cache, processwrapper-sandbox ... (2 actions running)
INFO: From Generating Dash formatted dependency file ...:
INFO: Successfully converted 62 packages from Cargo.lock to bazel-out/k8-fastbuild/bin/formatted.txt
Analyzing: target //:license-check (193 packages loaded, 5638 targets configured)
[15 / 17] JavaToolchainCompileBootClasspath external/rules_java+/toolchains/platformclasspath.jar; 0s disk-cache, processwrapper-sandbox
Analyzing: target //:license-check (193 packages loaded, 5638 targets configured)
[16 / 17] Building license.check.license_check.jar (); 0s disk-cache, multiplex-worker
Analyzing: target //:license-check (193 packages loaded, 5638 targets configured)
[17 / 17] no actions running
Analyzing: target //:license-check (194 packages loaded, 9972 targets configured)
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Analyzing: target //:license-check (194 packages loaded, 9972 targets configured)
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Analyzing: target //:license-check (194 packages loaded, 9972 targets configured)
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Analyzing: target //:license-check (194 packages loaded, 9972 targets configured)
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Analyzing: target //:license-check (194 packages loaded, 9972 targets configured)
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Analyzing: target //:license-check (194 packages loaded, 9972 targets configured)
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Analyzing: target //:license-check (194 packages loaded, 9972 targets configured)
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INFO: Analyzed target //:license-check (196 packages loaded, 10086 targets configured).
INFO: Found 1 target...
Target //:license.check.license_check up-to-date:
  bazel-bin/license.check.license_check
  bazel-bin/license.check.license_check.jar
INFO: Elapsed time: 51.451s, Critical Path: 4.22s
INFO: 17 processes: 12 internal, 4 processwrapper-sandbox, 1 worker.
INFO: Build completed successfully, 17 total actions
INFO: Running command line: bazel-bin/license.check.license_check ./formatted.txt <args omitted>
usage: org.eclipse.dash.licenses.cli.Main [-batch <int>] [-cd <url>]
       [-confidence <int>] [-ef <url>] [-excludeSources <sources>] [-help] [-lic
       <url>] [-project <shortname>] [-repo <url>] [-review] [-summary <file>]
       [-timeout <seconds>] [-token <token>]

[github-actions]

The created documentation from the pull request is available at: docu-html

[MaximilianSoerenPollak]

Should this be here?