add scanAndSelect, cardkb, and serialkb

meshtastic/module_config.proto

@@ -658,7 +658,7 @@ message ModuleConfig {
 
     /*
      * Input event origin accepted by the canned message module.
-     * Can be e.g. "rotEnc1", "upDownEnc1" or keyword "_any"
+     * Can be e.g. "rotEnc1", "upDownEnc1", "scanAndSelect", "cardkb", "serialkb", or keyword "_any"
      */
     string allow_input_source = 10;