Add lang_pack to Client params

pyrogram/client.py

@@ -100,6 +100,10 @@ class Client(Methods):
             Code of the language used on the client, in ISO 639-1 standard.
             Defaults to "en".
 
+        lang_pack (``str``, *optional*):
+            Internal parameter.
+            Defaults to "".
+
         ipv6 (``bool``, *optional*):
             Pass True to connect to Telegram using IPv6.
             Defaults to False (IPv4).
@@ -203,6 +207,7 @@ class Client(Methods):
     SYSTEM_VERSION = f"{platform.system()} {platform.release()}"
 
     LANG_CODE = "en"
+    LANG_PACK = ""
 
     PARENT_DIR = Path(sys.argv[0]).parent
 
@@ -227,6 +232,7 @@ def __init__(
         device_model: str = DEVICE_MODEL,
         system_version: str = SYSTEM_VERSION,
         lang_code: str = LANG_CODE,
+        lang_pack: str = LANG_PACK,
         ipv6: bool = False,
         alt_port: bool = False,
         proxy: dict = None,
@@ -258,6 +264,7 @@ def __init__(
         self.device_model = device_model
         self.system_version = system_version
         self.lang_code = lang_code.lower()
+        self.lang_pack = lang_pack.lower()
         self.ipv6 = ipv6
         self.alt_port = alt_port
         self.proxy = proxy

pyrogram/session/session.py

@@ -129,7 +129,7 @@ async def start(self):
                                 system_version=self.client.system_version,
                                 system_lang_code=self.client.lang_code,
                                 lang_code=self.client.lang_code,
-                                lang_pack="",
+                                lang_pack=self.client.lang_pack,
                                 query=raw.functions.help.GetConfig(),
                             )
                         ),