[3.x] Clean-up and refactor of the Android input implementation

[m4gr3d]

The first commit cleans up and refactors the Android input implementation:

• All input logic is delegated to the GodotInputHandler.java class which is now responsible for setting up and configuring the gesture handler logic
• The mouse & touch input logic has been refactored to rely primarily on the gesture handler
• The gesture handler logic was updated to include support for long press, multi-finger panning and scaling gestures. These gestures are disabled by default to mirror the current behavior
• The native input implementation was cleaned up to consolidate the logic in a few methods: process_touch_event for touch, process_mouse_event for mouse & stylus, and process_magnify and process_pan for scaling and panning gestures.

In the process, the PR addresses several existing Android input bugs:
Fixes #8151, #46100, #46101

Supersedes #59760, #54225

The second commit enables the long press, multi-finger panning and scaling gestures for the Godot Android Editor and fixes an input related bug that uses to cause a crash when clicking on the play button from the editor window.

Addresses some of the issues reported in godotengine/godot-proposals#3931

godot_android_editor_multi_touch_pixel5.mp4

master version

[akien-mga]

CC @madmiraal @thebestnom

[akien-mga]

Thanks!

[Calinou]

Should this be considered for a 3.5.1 cherry-pick? Having double-tap and right-click will make the Android editor much more usable, without having to wait for 3.6.

[m4gr3d]

Should this be considered for a 3.5.1 cherry-pick? Having double-tap and right-click will make the Android editor much more usable, without having to wait for 3.6.

@Calinou I think it's risky for a 3.5.1 backport. Since it's a lot of change, I'm expecting to shake out any remaining issues in the new code throughout the 3.6 release process.

For the Android editor, I'm planning to put out a 3.6.beta release either today or in the next few days for users to update and test without having to wait for the full Godot 3.6 release.

[VoxSkynned11]

Should this be considered for a 3.5.1 cherry-pick? Having double-tap and right-click will make the Android editor much more usable, without having to wait for 3.6.

@Calinou I think it's risky for a 3.5.1 backport. Since it's a lot of change, I'm expecting to shake out any remaining issues in the new code throughout the 3.6 release process.

For the Android editor, I'm planning to put out a 3.6.beta release either today or in the next few days for users to update and test without having to wait for the full Godot 3.6 release.

:0 omg i am really looking forward to that, thanks for all the hard work