feat: internationalization Bulgarian (#5998)

* Feature BG init

* lint fix

* Fix merge conflict

* merge main branch add bg lang

* reference centrally defined langs

* refactor supportedLanguages

---------

Co-authored-by: Livio Spring <livio.a@gmail.com>
Co-authored-by: Elio Bischof <eliobischof@gmail.com>
Co-authored-by: Max Peintner <max@caos.ch>
Co-authored-by: Elio Bischof <elio@zitadel.com>

console/src/assets/i18n/en.json

@@ -1040,7 +1040,8 @@
       "it": "Italiano",
       "ja": "日本語",
       "pl": "Polski",
-      "zh": "简体中文"
+      "zh": "简体中文",
+      "bg": "Български"
     },
     "SMTP": {
       "TITLE": "SMTP Settings",
@@ -1239,7 +1240,8 @@
         "it": "Italiano",
         "ja": "日本語",
         "pl": "Polski",
-        "zh": "简体中文"
+        "zh": "简体中文",
+        "bg": "Български"
       },
       "KEYS": {
         "emailVerificationDoneText": "Email verification done",
@@ -2103,7 +2105,8 @@
     "it": "Italiano",
     "ja": "日本語",
     "pl": "Polski",
-    "zh": "简体中文"
+    "zh": "简体中文",
+    "bg": "Български"
   },
   "MEMBER": {
     "ADD": "Add a Manager",