A new list function was added to the SpawnableEntitiesInterface that list entities together with the id of the entity in the spawnable that was used to create it.
This change also include the setup for testing the SpawnableEntitiesManager plus a few tests to cover the newly added functionality.
* update camera controller to block box select during orbit
* simplify update for modern viewport camera controller
* wip working lmb box select with orbit
* add test for changes to click detector
* add unit test for camera system to validate events
* remove debugging code, tidy-up changes for PR
* small updates before posting PR
* fix for linux build failure
* improve selection in the viewport
* remove debug code
* updates following review feedback
- update API comments from /// to //! from
- add [[nodiscard]] attribute to member function
- move constructor implementations to .cpp files
* use lambda instead of ternary operator
* fix unit test failure caused by typo