Also make it easier to test tpt-libs builds locally by making it possible to point build.sh at a local tpt-libs repo and move installation of build dependencies to build.sh.
Also Disallow linking against non-C++ system Lua, unless configuring with -Dworkaround_noncpp_lua=true, add -Dworkaround_elusive_bzip2 and friends, and get rid of the -image_base hack for macos.
This is how we'll handle systems where the cert bundle and cert directory is stored where mbedtls doesn't expect it.
Also update tpt-libs to get new curl and mbedtls.
Also restructure meson.build and the ghactions workflow a bit, and enable -ffunction-sections and -fdata-sections.
Note that starcatcher uploads have not been tested and most likely don't work.
Also fix the first mouse click not being detected on windows with sdl 2.0.20. Apparenlty, we need SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH set to 1 for it to be detected.
