Request: also add current Lua version to pkg-config

[cxw42]

I have Lua 5.3 installed both as an Ubuntu package and through luaver. However, pkg-config points to the system Lua even when I am using luaver:

$ luaver use 5.3.5
==>  Switching to lua-5.3.5
==>  Successfully switched to lua-5.3.5

$ pkg-config --cflags --libs lua5.3
-I/usr/include/lua5.3 -llua5.3

Would you be open to creating a .pc file and adding it to PKG_CONFIG_PATH on luaver use? That way autoconf or other pkg-config users would find my luaver lua rather than the system lua. Thanks for considering this request!

(tested on Lubuntu Eoan)