set up main structure of the UI

UI/utils.py

@@ -0,0 +1,7 @@
+def GetPrivilege(username, ExecCommand):
+    dat=ExecCommand(f'query_profile -c {username} -u {username}')
+    if dat=='-1':
+        return -1
+    # dat is something like: <username> <name> <mail> <privilege>
+    dat=dat.split(' ')
+    return int(dat[3])