Check existance of and create logfile at startup

wallman/wallman_lib.py

@@ -1,5 +1,5 @@
 from sys import exit
-from os import chdir, getenv, system
+from os import chdir, getenv, system, path
 import logging
 import tomllib
 from datetime import datetime, time
@@ -72,6 +72,8 @@ class _ConfigLib:
         chdir("/var/log/wallman/")
         numeric_level: int = getattr(logging, self.config_log_level, logging.INFO)
         logger.setLevel(numeric_level)
+        if not path.exists("wallman.log"):
+            system("touch wallman.log")
         logging.basicConfig(filename="wallman.log", encoding="utf-8", level=numeric_level)
 
     # TODO: Make this all just work inside the try/except block, there is no need for get()