ui: minor improvements

- delete ipc socket on exit
- save ipc socket under /run/user/.../opensnitch/
- added new contributor

ui/bin/opensnitch-ui

@@ -3,6 +3,7 @@
 #   Copyright (C) 2018      Simone Margaritelli
 #                 2018      MiWCryptAnalytics
 #                 2023      munix9
+#                 2023      Wojtek Widomski
 #                 2019-2023 Gustavo Iñiguez Goia
 #
 #   This file is part of OpenSnitch.
@@ -51,6 +52,10 @@ app_id = os.path.join(xdg_opensnitch_dir, "io.github.evilsocket.opensnitch")
 def on_exit():
     server.stop(0)
     app.quit()
+    try:
+        os.remove(app_id)
+    except:
+        pass
     sys.exit(0)
 
 def supported_qt_version(major, medium, minor):

ui/opensnitch/utils/xdg.py

@@ -2,6 +2,7 @@
 import os
 import re
 import shutil
+import stat
 
 # https://github.com/takluyver/pyxdg/blob/1d23e483ae869ee9532aca43b133cc43f63626a3/xdg/BaseDirectory.py
 def get_runtime_dir(strict=True):
@@ -44,9 +45,9 @@ def get_runtime_dir(strict=True):
 def get_run_opensnitch_dir():
     rdir = get_runtime_dir(False)
     if 'opensnitch' not in rdir:
-        odir = os.path.join(rdir, 'opensnitch')
+        rdir = os.path.join(rdir, 'opensnitch')
         try:
-            os.makedirs(odir, 0o700)
+            os.makedirs(rdir, 0o700)
         except:
             pass