Improve Godot shutdown process on Android

[m4gr3d]

Godot version:
Any version < 3.2

OS/device including version:
Android

Issue description:
PR #31521 provides a temp solution to properly shutdown Godot apps on Android by killing the entire app process.
The proper fix involves tracking down the native components that are initialized at startup and properly cleaning them at application shut down.
This is a more involved fix as it might involve multiple refactors across the codebase.

[loddyryons]

Hi @m4gr3d I'm curious if this is being worked on? Currently on Android when restart is called, it tries to restart the process to clear state, but this obviously means that the application is killed and restarted on the user which isn't ideal.

Relevant code ->

godot/platform/android/java/lib/src/org/godotengine/godot/Godot.java

Line 312 in 2abe996

// HACK:

Thanks!

[m4gr3d]

Hi @m4gr3d I'm curious if this is being worked on? Currently on Android when restart is called, it tries to restart the process to clear state, but this obviously means that the application is killed and restarted on the user which isn't ideal.

@loddyryons PR #51846 and #51586 improve the state of things by delegating to the Godot host instead. This way the default behavior can be overwritten where appropriate.