Work in progress language selection support

Still need to add a popup telling you that NUSGet needs to be restarted after changing the language, and having it load the selected language in the selection menu so that it's checked on launch.

modules/core.py

@@ -1,15 +1,12 @@
 # "modules/core.py", licensed under the MIT license
 # Copyright 2024-2025 NinjaCheetah & Contributors
 
-import os
-import json
-import pathlib
 import requests
 from dataclasses import dataclass
 from typing import List
 
 from PySide6.QtCore import Qt, QSize
-from PySide6.QtWidgets import QStyledItemDelegate, QSizePolicy
+from PySide6.QtWidgets import QStyledItemDelegate
 
 
 # This is required to make the dropdown look correct with the custom styling. A little fuzzy on the why, but it has to
@@ -63,6 +60,13 @@ def connect_is_enabled_to_checkbox(items, chkbox):
             item.setEnabled(False)
 
 
+def fixup_qmenu_background(menu):
+    # These fixes are required to not have a square background poking out from behind the rounded corners of a QMenu.
+    menu.setWindowFlags(menu.windowFlags() | Qt.FramelessWindowHint)
+    menu.setWindowFlags(menu.windowFlags() | Qt.NoDropShadowWindowHint)
+    menu.setAttribute(Qt.WA_TranslucentBackground)
+
+
 def check_nusget_updates(app, current_version: str, progress_callback=None) -> str | None:
     # Simple function to make a request to the GitHub API and then check if the latest available version is newer.
     gh_api_request = requests.get(url="https://api.github.com/repos/NinjaCheetah/NUSGet/releases/latest", stream=True)
@@ -81,25 +85,3 @@ def check_nusget_updates(app, current_version: str, progress_callback=None) -> s
                 return new_version
         progress_callback.emit(app.translate("MainWindow", "\n\nYou're running the latest release of NUSGet."))
     return None
-
-
-def get_config_file() -> pathlib.Path:
-    config_dir = pathlib.Path(os.path.join(
-        os.environ.get('APPDATA') or
-        os.environ.get('XDG_CONFIG_HOME') or
-        os.path.join(os.environ['HOME'], '.config'),
-        "NUSGet"
-    ))
-    config_dir.mkdir(exist_ok=True)
-    return config_dir.joinpath("config.json")
-
-
-def save_config(config_data: dict) -> None:
-    config_file = get_config_file()
-    print(f"writing data: {config_data}")
-    open(config_file, "w").write(json.dumps(config_data))
-
-
-def update_setting(config_data: dict, setting: str, value: any) -> None:
-    config_data[setting] = value
-    save_config(config_data)