mls (v4.2) (#1492)

## Description:

mls for v24
Version identifier within MLS: v4.2

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [x] I have read and accepted the CLA aggreement (only required once).

## Please put your Discord username so you can be contacted if a bug or
regression is found:

aotumuri

src/client/LangSelector.ts

@@ -13,6 +13,7 @@ import eo from "../../resources/lang/eo.json";
 import es from "../../resources/lang/es.json";
 import fi from "../../resources/lang/fi.json";
 import fr from "../../resources/lang/fr.json";
+import gl from "../../resources/lang/gl.json";
 import he from "../../resources/lang/he.json";
 import hi from "../../resources/lang/hi.json";
 import it from "../../resources/lang/it.json";
@@ -67,6 +68,7 @@ export class LangSelector extends LitElement {
     sv_se,
     zh_cn,
     ko,
+    gl,
   };
 
   createRenderRoot() {