refactor: split out config logic to remove need to check app name for function-based usage

This MR splits out the logic such that there is now a binary that handles function based calls without validating the app name. We should only every check the app name for the subcommands and not internally. Internal calls should have their arguments taken at face value.

plugins/config/functions

@@ -7,7 +7,7 @@ config_sub() {
   declare desc="executes a config subcommand"
   local name="$1"
   shift
-  "$PLUGIN_AVAILABLE_PATH/config/subcommands/$name" "config:$name" "$@"
+  "$PLUGIN_AVAILABLE_PATH/config/config_sub" "$name" "$@"
 }
 
 config_export() {