Make everything use find_runfiles

[MaximilianSoerenPollak]

📌 Description

Change all 'os.getenv[RUNFILES]' to now use the find_runfiles file.
!! This is in preperation for the rules_python upgrade which changes this implementation again. !!
The PR to upgrade rules_python & other modules will be prepared right after.

🚨 Impact Analysis

• This change does not violate any tool requirements and is covered by existing tool requirements
• This change does not violate any design decisions
• Otherwise I have created a ticket for new tool qualification

✅ Checklist

• Added/updated documentation for new or changed features
• Added/updated tests to cover the changes
• Followed project coding standards and guidelines

[github-actions]

License Check Results

🚀 The license check job ran with the Bazel command:

bazel run //src:license-check

Status: ⚠️ Needs Review

Click to expand output

[License Check Output]
Extracting Bazel installation...
Starting local Bazel server (8.3.0) and connecting to it...
INFO: Invocation ID: ce3702c4-1e7d-4c4c-8927-ec6bd61b46e5
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Loading: 
Loading: 0 packages loaded
Loading: 0 packages loaded
Loading: 0 packages loaded
    currently loading: src
Loading: 0 packages loaded
    currently loading: src
Analyzing: target //src:license-check (1 packages loaded, 0 targets configured)
Analyzing: target //src:license-check (1 packages loaded, 0 targets configured)

Analyzing: target //src:license-check (65 packages loaded, 9 targets configured)

Analyzing: target //src:license-check (69 packages loaded, 9 targets configured)

Analyzing: target //src:license-check (73 packages loaded, 9 targets configured)

Analyzing: target //src:license-check (126 packages loaded, 932 targets configured)

Analyzing: target //src:license-check (130 packages loaded, 2070 targets configured)

Analyzing: target //src:license-check (133 packages loaded, 2407 targets configured)

Analyzing: target //src:license-check (138 packages loaded, 2456 targets configured)

Analyzing: target //src:license-check (141 packages loaded, 4466 targets configured)

Analyzing: target //src:license-check (142 packages loaded, 4590 targets configured)

INFO: Analyzed target //src:license-check (143 packages loaded, 4716 targets configured).
[11 / 13] [Prepa] JavaToolchainCompileBootClasspath external/rules_java+/toolchains/platformclasspath.jar
[12 / 13] Building src/license.check.license_check.jar (); 0s disk-cache, multiplex-worker
INFO: Found 1 target...
Target //src:license.check.license_check up-to-date:
  bazel-bin/src/license.check.license_check
  bazel-bin/src/license.check.license_check.jar
INFO: Elapsed time: 24.052s, Critical Path: 2.61s
INFO: 13 processes: 9 internal, 3 processwrapper-sandbox, 1 worker.
INFO: Build completed successfully, 13 total actions
INFO: Running command line: bazel-bin/src/license.check.license_check src/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]

I would like to take the learnings from here (and use this as a base) and combine it with the PR that upgrades it into rules_python 1.5+.

I don't think it makes sense to merge this for the couple days it will survive.