Ported the majority of UIs to NUI

[BenjaminAmos]

Description

This pull request converts the majority of UI interfaces over to use NUI. There are still a few things still using the previous UI classes where equivalent functionality is not present in NUI.

This is an aggregation of several pull requests which individually port over each screen:

• Convert remaining MainGameScreen visuals to NUI #665
• Convert the in-game menu to NUI #666
• Convert the talk screen to NUI #667
• Convert the inventory screen (and all InventoryOperationsScreen screens) to NUI #668
• Convert MapScreen and WaypointCreationScreen to NUI #669
• Convert TutorialScreen to NUI #670

This also brings-back the ability charges bar, which was broken in 2.0.0.

You can view a visual comparison of the changes here.

Testing

See the individual PRs for testing information for each screen.

Potential Future Improvements

• The UIWarnDrawer notifications are not the most visually pleasant. Better placement and design is needed but for now I've tried to retain most lf the original appearance and behaviour.
• UIWarnDrawer notifications start from the middle of the screen on Android, which shouldn't really be the case.

Breaking Changes

• The original GameScreens#mainGameScreen variable has been re-named to GameScreens#oldMainGameScreen.
• GameScreens#mainGameScreen now points to the NUI version of MainGameScreen instead.

Notes

• This closes Adapt existing UI screens to use NUI #632.