#2182: add commandlet view with combobox to select and execute commandlets

[Hiepiscus]

This PR fixes #2182

Adds a new commandlet view that allows user to select a commandlet from a combobox, configure its parameters, and execute it so that IDEasy commands can be run from the GUI without using the command line.

Implemented changes:

• CommandletController (new):
  • Controller that populates a sorted combobox with all available commandlet names form the CommandletManager. Parses the parameter text input and maps tokens to commandlet value properties then executes the commandlet via runCommandlet.
• commandlet-view (new):
  • FXML view with commandlet combobox, a textfield for parameters and a execute button.
• MainController:
  • Added openCommandlet() method to navigate from the main to commandlet view and connected to a new button.
• main-view: new navigation button for commandlet view.

---

Testing instructions

1. Run AppLauncher
2. Set Project and Workspace
3. Click Commandlets
4. Select a commandlet from the combobox
5. Enter parameters in the text field seperated by space (e.g. mvn 3.9.4)
6. Click Run to execute

---

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 30266245727

Coverage decreased (-0.09%) to 72.476%

Details

• Coverage decreased (-0.09%) from the base build.
• Patch coverage: No coverable lines changed in this PR.
• 38 coverage regressions across 2 files.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

38 previously-covered lines in 2 files lost coverage.

File	Lines Losing Coverage	Coverage
com/devonfw/ide/gui/MainController.java	37	53.98%
com/devonfw/tools/ide/tool/ide/IdeToolCommandlet.java	1	78.33%

---

Coverage Stats

Relevant Lines:	16992
Covered Lines:	12833
Line Coverage:	75.52%
Relevant Branches:	7590
Covered Branches:	4983
Branch Coverage:	65.65%
Branches in Coverage %:	Yes
Coverage Strength:	3.2 hits per line

---

💛 - Coveralls

[laim2003]

Thanks for your PR 👍 however to be honest, I think we should really rework, how we will implement this UI-wise. Right now, when i click on "Commandlets", the whole screen simply gets replaced like this:

This does not really follow any user experience standards, besides the fact that i do not really see how I can navigate away from this screen?
Also, all commandlets get executed on the UI thread, which freezes the application.

Sadly we do not yet have any documented guidelines on how we implement changes in the UI as a process, which we should definitely change soon, but for now I think it will make sense that we first create a sketch in our Figma board to understand how we want the feature to look for the end user (https://www.figma.com/design/cEcWlvnNOS5xVE2kQFZe0R/IDEasy?node-id=207-2267). Maybe we can implement it as a separate tab for example? But we can also discuss this further in the Dailys.