#1987: Fixed GUI not launching for snapshot versions

[laim2003]

This PR fixes #1987

Implemented changes:

• Added -U flag to the maven execution command
• Specified maven exec plugin version to 3.1.0
• Added definition to the gui-launcher pom file
• Added --enableLogging / -l flag to the GUI commandlet. This will launch the GUI in ProcessMode.DEFAULTrather then ProcessMode.BACKGROUND_SILENT; this way all internal JavaFX/Maven logs etc are printed to the terminal, making debugging easier.

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Testing instructions

Please add conscise, understandable instructions on how a reviewer can test/verify the functionality of your contribution here:

Testing the snapshot version fix:

1. Upgrade your IDEasy version to the latest snapshot/nightly build: ide upgrade --mode=snapshot
2. run ide gui
3. GUI should now launch without any issues.

Testing the new --enableLogging flag:

1. Upgrade your IDEasy version to the latest snapshot/nightly build: ide upgrade --mode=snapshot
2. run ide gui --enableLogging or ide gui -l (small L)
3. Instaed of the terminal resuming to the default input state, you should now see all maven and javafx internal logs being printed to the terminal.

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Checklist for this PR

Make sure everything is checked before merging this PR. For further info please also see
our DoD.

• When running mvn clean test locally all tests pass and build is successful
• PR title is of the form #«issue-id»: «brief summary» (e.g. #921: fixed setup.bat). If no issue ID exists, title only.
• PR top-level comment summarizes what has been done and contains link to addressed issue(s)
• PR and issue(s) have suitable labels
• Issue is set to In Progress and assigned to you or there is no issue (might happen for very small PRs)
• You followed all coding conventions
• You have added the issue implemented by your PR in CHANGELOG.adoc unless issue is labeled
  with internal
• You have formulated clear instructions on how to test your contribution under "Testing instructions"

[coveralls]

Coverage Report for CI Build 27694924959

Coverage increased (+0.05%) to 71.337%

Details

• Coverage increased (+0.05%) from the base build.
• Patch coverage: No coverable lines changed in this PR.
• 5 coverage regressions across 3 files.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

5 previously-covered lines in 3 files lost coverage.

File	Lines Losing Coverage	Coverage
com/devonfw/tools/ide/tool/gui/Gui.java	3	87.88%
com/devonfw/tools/ide/tool/ide/IdeToolCommandlet.java	1	78.33%
com/devonfw/tools/ide/version/VersionSegment.java	1	89.76%

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Coverage Stats

Relevant Lines:	16228
Covered Lines:	12075
Line Coverage:	74.41%
Relevant Branches:	7252
Covered Branches:	4675
Branch Coverage:	64.46%
Branches in Coverage %:	Yes
Coverage Strength:	3.15 hits per line

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💛 - Coveralls