add gitignore and fix a small bug with settings if the file doesn't exist

.gitignore

@@ -0,0 +1,7 @@
+venv/
+build/
+__pycache__/
+pyvenv.cfg
+.env/
+bin/
+lib/

settings/__init__.py

@@ -14,16 +14,17 @@ WHATSMINER_PWD = "admin"
 
 DEBUG = False
 
+settings_keys = {}
+
 try:
     with open(
         os.path.join(os.path.dirname(__file__), "settings.toml"), "r"
     ) as settings_file:
         settings = toml.loads(settings_file.read())
+    settings_keys = settings.keys()
 except:
     pass
 
-settings_keys = settings.keys()
-
 if "ping_retries" in settings_keys:
     NETWORK_PING_RETRIES: int = settings["ping_retries"]
 if "ping_timeout" in settings_keys: