Feature/load new lifecycle config

[NicolasFussberger]

• Introduces an interface in src/launch_manager_daemon/config for loading a launch manager configuration file
• Introduce an implementation of this interface using flatbuffer
• Introduce unit tests for the new code

Note: The code is not actually in use yet. The python script which does the translation from the user-facing json configuration to the flatbuffer json format is not part of the PR and will be added in a follow up PR.
Furthermore, the launch manager code needs to be adapted to use the new structure.

Background:

• In the last months we had defined a new user-facing configuration format (see src/launch_manager_daemon/config/config_schema/launch_manager.schema.json).
• However, this new format is currently still mapped to the old configuration files (to processes / process groups). So the code is not actually reading the new configuration file

Relates To: #209

[github-actions]

License Check Results

🚀 The license check job ran with the Bazel command:

bazel run --lockfile_mode=error //:license-check

Status: ⚠️ Needs Review

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[License Check Output]
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Analyzing: target //:license-check (162 packages loaded, 10142 targets configured)

Analyzing: target //:license-check (163 packages loaded, 10262 targets configured)

INFO: Analyzed target //:license-check (163 packages loaded, 10268 targets configured).
[12 / 16] JavaToolchainCompileClasses external/rules_java+/toolchains/platformclasspath_classes; 0s disk-cache, processwrapper-sandbox ... (2 actions running)
[14 / 16] JavaToolchainCompileBootClasspath external/rules_java+/toolchains/platformclasspath.jar; 0s disk-cache, processwrapper-sandbox
[15 / 16] Building license.check.license_check.jar (); 0s disk-cache, multiplex-worker
INFO: Found 1 target...
Target //:license.check.license_check up-to-date:
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  bazel-bin/license.check.license_check.jar
INFO: Elapsed time: 24.363s, Critical Path: 2.71s
INFO: 16 processes: 12 internal, 3 processwrapper-sandbox, 1 worker.
INFO: Build completed successfully, 16 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

[paulquiring]

review from my side is finished.