better error messages for failed tests

[0UmfHxcvx5J7JoaOhFSs5mncnisTJJ6q]

close #1119

• New feature

Checklist:

• My code follows the coding etiquette
• I performed a self-review of my own code
• I explained my changes within the PR, particularly in hard-to-understand areas
• I checked that the in-code documentation is up-to-date
• I adjusted the reporting in remind2 where it was needed
• I adjusted forbiddenColumnNames in readCheckScenarioConfig.R in case the PR leads to deprecated switches
• All automated model tests pass (FAIL 0 in the output of make test)
• The changelog CHANGELOG.md has been updated correctly

Further information (optional):

Tail of the output (on a manually introduced compilation error) looks like

…
Creating full.gms
Error in prepare() : Compiling main_testOneRegi.gms failed, stopping.
Use `less -j 4 --pattern='^\*\*\*\*' output/testOneRegi/main.lst` to investigate compilation errors.
Calls: prepareAndRun -> prepare
2023-09-28 11:56:56: unlocked model.
Execution halted
Error in submit(cfg) : Executing prepareAndRun failed, stopping.
Execution halted
✖ | 1       0 | 02-compile [60.2s]                                                                                                      
────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
Failure (test_02-compile.R:11:3): remind compiles
`Rscript start.R config/tests/scenario_config_compile.csv` returned exit status 1, not 0
────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
✔ |     1   0 | 03-quick                                                                                                                
✔ |     2   0 | 04-gamscompile                                                                                                          
✔ |     1   0 | 05-default                                                                                                              
✔ |     1   0 | 06-output                                                                                                               
✔ |     1   0 | 20-coupled                                                                                                              
✔ |     1   0 | 99-codeCheck                                                                                                            

══ Results ═════════════════════════════════════════════════════════════════════════════════════════════════════════════════════════════
Duration: 89.5 s

── Skipped tests (9) ───────────────────────────────────────────────────────────────────────────────────────────────────────────────────
• A previous test failed. (3): test_03-quick.R:8:3, test_04-gamscompile.R:11:3, test_99-codeCheck.R:10:3
• Not run in default tests, use `make test-full` to run (takes significantly longer than 10 minutes). (5): test_01-start.R:34:3,
  test_04-gamscompile.R:25:3, test_05-default.R:8:3, test_06-output.R:7:1, test_20-coupled.R:8:1
• standalone models aren't consistent at the moment (1): test_01-gms_readSettings.R:12:3

── Failed tests ────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
Failure (test_02-compile.R:11:3): remind compiles
`Rscript start.R config/tests/scenario_config_compile.csv` returned exit status 1, not 0

[ FAIL 1 | WARN 0 | SKIP 9 | PASS 79 ]
Error: Test failures
Execution halted
make: *** [Makefile:54: test] Error 1

[LaviniaBaumstark]

nice improvement