Update many files.

Add some description about this project, and now it has a simple UI (made with Qt)

If you don't specify the mode of (interface?) the UI. Launcher will show a crude window that lets you
 select a mode to start the (real) launcher.

Test version data fetching functions. Looks great.

main.py

@@ -1,14 +1,12 @@
-import os
 import sys
 import argparse
 import logging
+
 from app import Launcher
 import tkinter as tk
 
-# Logger configure
-logging.basicConfig(format='%(asctime)s:%(name)s:%(levelname)s: %(message)s',
-                    level=logging.INFO,
-                    datefmt='%H:%M:%S')
+from core_lib.log.default import DEFAULT_FORMAT, DEFAULT_DATE_FORMAT, get_colorful_handler
+
 
 def select_mode() -> None | str:
     value = None
@@ -49,26 +47,44 @@ def tui_entry():
     logger.info("Wow tui is unfinished")
 
 def main():
+    root_logger = logging.getLogger()
     logger = logging.getLogger("Launcher.Main")
 
+    # parse arguments
     parser = argparse.ArgumentParser()
     parser.add_argument("-m", "--mode", choices=['lightweight', 'full', 'choice'], default='choice',
                         help="Select mode (lightweight for tui, full is gui,"
                              "choice for a mode select window)", required=False)
+    parser.add_argument("-d", "--debug", action="store_true",
+                        help="Enable debug mode", default=False)
 
     args, unknown = parser.parse_known_args()
     for arg in unknown:
-        logging.warning("Unknown argument '%s'" % arg)
+        logger.warning("Unknown argument '%s'" % arg)
 
+    # args value set
     if not hasattr(args, "mode") or args.mode == "choice":
         mode = select_mode()
 
         if mode is None:
-            logging.warning("No mode selected. Exiting...")
+            logger.warning("No mode selected. Exiting...")
             sys.exit(0)
     else:
         mode = args.mode
 
+    debug = args.debug
+
+    # Init lib
+    level = logging.DEBUG if debug else logging.INFO
+
+    # Set root logger level and configure handler for colorful log (not sure why I added this)
+    root_logger.setLevel(level)
+    root_logger.addHandler(get_colorful_handler())
+
+    # Logger configure
+    logging.basicConfig(format=DEFAULT_FORMAT, datefmt=DEFAULT_DATE_FORMAT, level=level)
+
+    # Start (the real) launcher
     if mode == 'lightweight':
         sys.exit(tui_entry())
     elif mode == 'full':
@@ -78,6 +94,5 @@ def main():
         logger.error("Unknown mode '%s'" % mode)
         sys.exit(1)
 
-
 if __name__ == '__main__':
     main()