Controlify 1.7.0 (Beta 1) for 1.20.1

This patch focuses on stability and controller compatibility.

Changes

Switched to Java Native Access (JNA) from Java Native Interface (JNI) for SDL2 native library.
- This should fix issues on Linux and macOS when loading SDL2.
- This makes adding more features with SDL2 easier in the future.
Provided gamecontrollerdb.txt to SDL and GLFW to (hopefully) improve controller compatibility.
Controller calibration now detects triggers on joysticks. You must re-calibrate your controller for this to take effect.
Added an SDL download screen that appears with a progress bar when downloading SDL2 for the first time or an update.