implement keymaps! they still have quite a bit of work to be any good...

but now our key do stuff when pressed (at the compositor level)

runtime/share/mezzaluna/init.lua

@@ -9,3 +9,8 @@ end
 
 mez.path.config = mez.fs.joinpath(env_conf, "mez", "init.lua")
 package.path = package.path..";"..mez.fs.joinpath(env_conf, "mez", "lua", "?.lua")
+
+-- this is an example
+-- mez.api.add_keymap("ctrl", "a", function()
+--   print("hello from my keymap")
+-- end)