GitLab

- Simplify bios loading related functions
- use const char * instead of std::sting where application
- remove some directory-related initializations that are need

Add fixed rotation to core options

This should allow fixed rotations if need be for use with core or game
overrides.

Updates

Add 16/32 color modes switching and cleanups

- Cleanup for video/surface.cpp and video/surface.h
- Enable support for 16/32 bit color switching using core options (restart method).
- Switch to 16 color mode as default

Update Makefile

Update libretro-common

Fix retro_load_game always returns false

- retro_load_game is always returning false causing games to fail loading since the variable "game" is always NULL.
- returns true from retro_load_game if everything loads up fine without major issues.

Backport https://github.com/libretro/beetle-psx-libretro/pull/681/commits/f725c34a50cc1a4058a8cf55b6ac383302b0d35c

update and bug fix

- Shorten option description and make key label more descriptive
- This should reflect the proposed changes on the docs page

Sync to upstream 1.24.0 and add misc features

- Not much code-wise has been updated since this cores last major update. So majority of the version bump is to structurally sync code with upstream while maintaining any existing update like headerless support and rotation.