CI bot for Linux and Windows builds

This will setup the shared CI bot to build and upload Windows x32, Windows x64, Linux x86, and Linux x64 binaries

added support for GGC 13.2 and Clang

removed unused local variable named scale in src/hardware/hw_main.c

fixed the size of name in src/hardware/hw_md2.c within HWR_InitModels(), HWR_AddPlayerModel(), and HWR_AddSpriteModel()

marked newsignalhandler_Warn() in src/sdl/i_system.c as a function of no return

in src/d_clisrv.c, removed unused local variable named i in Ban_Load_File()

in src/lua_baselib.c, removed unused local variable named botcount in lib_gAddPlayer()

in src/p_map.c, within P_SlideMove(), moved the junk variable off the stack