Add support for hdiffpatch files

Game now apply update properly (hopefully)

Signed-off-by: tretrauit <tretrauit@gmail.com>

worthless/launcherconfig.py

@@ -0,0 +1,49 @@
+from configparser import ConfigParser
+from pathlib import Path
+
+
+class LauncherConfig:
+    """
+    Provides config.ini for official launcher compatibility
+    """
+
+    @staticmethod
+    def create_config(game_version, overseas=True):
+        """
+        Creates config.ini
+        """
+        sub_channel = "0" if overseas else "1"
+        config = ConfigParser()
+        config.add_section("General")
+        config.set("General", "channel", "1")
+        config.set("General", "cps", "mihoyo")
+        config.set("General", "game_version", game_version)
+        config.set("General", "sdk_version", "")
+        config.set("General", "sub_channel", sub_channel)
+        return config
+
+    def __init__(self, config_path, game_version=None, overseas=True):
+        if isinstance(config_path, str):
+            self.config_path = Path(config_path)
+        if not game_version:
+            game_version = "0.0.0"
+        self.config_path = config_path
+        self.config = ConfigParser()
+        if self.config_path.exists():
+            self.config.read(self.config_path)
+        else:
+            self.config = self.create_config(game_version, overseas)
+
+    def set_game_version(self, game_version):
+        self.config.set("General", "game_version", game_version)
+
+    def set_overseas(self, overseas=True):
+        sub_channel = "0" if overseas else "1"
+        self.config.set("General", "sub_channel", sub_channel)
+
+    def save(self):
+        """
+        Saves config.ini
+        """
+        with self.config_path.open("w") as config_file:
+            self.config.write(config_file)