add Arabic (ar-SA) translation, RTL & fix SSR navigator error. (#1623)

* feat: add Arabic translation (ar-SA)

* Add Arabic localization and RTL support

* cleanup ar-SA

---------

Co-authored-by: Maxi Quoß <maxi@quoss.org>

frontend/project.inlang/.gitignore

@@ -1 +1,19 @@
-cache
+# IF GIT SHOWED THAT THIS FILE CHANGED
+#
+# 1. RUN THE FOLLOWING COMMAND
+#
+# ---
+# git rm --cached '**/*.inlang/.gitignore'
+# ---
+#
+# 2. COMMIT THE CHANGE
+#
+# ---
+# git commit -m "fix: remove tracked .gitignore from inlang project"
+# ---
+#
+# Inlang handles the gitignore itself starting with version ^2.5.
+#
+# everything is ignored except settings.json
+*
+!settings.json

frontend/project.inlang/settings.json

@@ -2,6 +2,7 @@
 	"$schema": "https://inlang.com/schema/project-settings",
 	"baseLocale": "en-US",
 	"locales": [
+		"ar-SA",
 		"bg-BG",
 		"cs-CZ",
 		"de-DE",