Add implicit dependencies from the target

[laeubi]

Currently if one defines implicit dependencies in the target these only getting added to the launch but not the project, this makes these quite hard to use. The best would be to make this feature more flexible to let the user choose if it is a runtime requirement or a compile dependency.

Unless we have this, it seems the best way is to add it in both cases as indicated in the help:

The Implicit Dependencies section is used to manage the implicit
dependencies of the target. Any plug-in marked as an implicit
dependency will always be added as a required plug-in when PDE
determines requirements.

[github-actions]

Test Results

  510 files   -   255    510 suites   - 255   28m 51s ⏱️ - 20m 7s
3 611 tests ±    0  3 557 ✅ ±    0   54 💤 ± 0  0 ❌ ±0 
7 223 runs   - 3 611  7 114 ✅  - 3 557  109 💤  - 54  0 ❌ ±0 

Results for commit 804f8e5. ± Comparison against base commit 5c59d79.