write LASTFM_API_KEY to config file

+ remove alive bar

app/utils/wintools.py

@@ -1,12 +1,14 @@
 import platform
 
+IS_WIN = platform.system() == "Windows"
+
 
 # TODO: Check is_windows on app start in settings.py
 def is_windows():
     """
     Returns True if the OS is Windows.
     """
-    return platform.system() == "Windows"
+    return IS_WIN
 
 
 def win_replace_slash(path: str):