#2183: dynamically generate form fields for selected commandlet

[Hiepiscus]

This PR fixes #2183

Introduces dynamic form generation for commandlets. Instead of using a static input field, the UI now creates appropriate form fields based on the properties of the selected commandlet for a more flexible configuration experience.
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Implemented changes:

• Dynamically generate form fields based on the selected commandlet properties
• PropertyFormFieldFactory (new): create appropriate UI based on commandlet:
  • TextField for positional parameters and named options
  • CheckBox for boolean flags
• Replaced static TextField with a ScrollPane + VBox in the FXML layout
• Added onCommandletSelected() listener to regenerate the form on selection change
• Adapted runCommandlet() to read property values from generated form fields

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Testing instructions

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

1. Run AppLauncher
2. Set a project and workspace
3. Click Commandlets
4. Select a commandlet from the combobox
5. Verify that the displayed form fields change depending on the selected commandlet
6. Enter parameters in the generated fields
7. Click Run
8. Verify that the commandlet executes successfully

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