feat(snap): Support scrcpy v4+ with SDL3

Shripal Jainrequested to merge
Shripal17/scrcpy-runtime-snaps:core24-scrcpy_v4 into core24
  • Bump application version to 4.1
  • Add sdl3 part to build SDL3 from source on core24
  • Update scrcpy part dependencies: replace libsdl2-dev with sdl3 and libv4l-dev
  • Update PKG_CONFIG_PATH and LD_LIBRARY_PATH for staged SDL3 libraries
  • Update README documentation with runtime /usr/local/lib library paths

Merge request reports