languages: add guarani (#2603)

* spanish: some necessary, minor rewording for new background sync strings

* en: fix unmetered network typo

* languages: add guarani

Adds strings_gn.arb file.

* fix: remove `,` from beginning and end of file

* tl_constant: add `gn` value

* flags: add guarani (PY) flag

Adds _gn.png_ file.

* languages: add guarani

* localeCountryCode: fix guarani value to 3 letters (grn); making it cohesive with all others

* res/values: replace strings_gn.arb file for appropriate one

* guarani: remove unnecessary `,` at the beginning and end of file

* guarani: fix a lot of syntax errors...

* guarani: remove all remaining trails of Spanish translation; fix all wrongly translated `${}` values back to English

* fix: gn translation

* ci: add ci check for translations

* Update .github/workflows/are_translations_sane.yml

* res/values: adds fixed `strings_gn.arb` file

* res/values: undoes wrong GN=>ES translations on file

* res/values: fix missing `}` for `strings_gn.arb`

* res/values: adds revised `strings_gn.arb` file

* res/values: adds revised `strings_gn.arb` file

* res/values: adds revised `strings_gn.arb` file

---------

Co-authored-by: Czarek Nakamoto <cyjan@mrcyjanek.net>
Co-authored-by: Omar Hatem <omarh.ismail1@gmail.com>

.github/workflows/are_translations_sane.yml

@@ -0,0 +1,18 @@
+name: Are translations sane
+
+on: [pull_request]
+
+jobs:
+  PR_test_build:
+    runs-on: ubuntu-24.04
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Check for translations
+        if: github.event_name == 'pull_request'
+        run: |
+          for i in res/values/strings_*.arb;
+          do
+            echo "tr: $i"
+            cat $i | jq || exit 1
+          done