lua: Add more symlinks to lua.pc

This creates a symlink to lua.pc for every name of the file used by Arch:

For a version of Lua (for example, 5.4) we now have:
- lib/pkgconfig/lua.pc
- lib/pkgconfig/lua-5.4.pc
- lib/pkgconfig/lua5.4.pc
- lib/pkgconfig/lua54.pc

pkgs/development/interpreters/lua-5/interpreter.nix

···
     Libs: -L$out/lib -llua -lm
     Cflags: -I$out/include
     EOF
+    ln -s "$out/lib/pkgconfig/lua.pc" "$out/lib/pkgconfig/lua-${luaversion}.pc"
     ln -s "$out/lib/pkgconfig/lua.pc" "$out/lib/pkgconfig/lua${luaversion}.pc"
+    ln -s "$out/lib/pkgconfig/lua.pc" "$out/lib/pkgconfig/lua${lib.replaceStrings [ "." ] [ "" ] luaversion}.pc"
   '';
 
   passthru = rec {