change db filepath to save in app directory

globals.py

@@ -1,3 +1,8 @@
+import os
+
+app_directory = os.path.dirname(os.path.abspath(__file__))
+db_file_path = os.path.join(app_directory, "client.db")
+
 all_messages = {}
 channel_list = []
 notifications = set()
@@ -9,7 +14,6 @@ selected_node = 0
 current_window = 0
 interface = None
 display_log = False
-db_file_path = "client.db"
 message_prefix = ">>"
 sent_message_prefix = message_prefix + " Sent"
-notification_symbol = "*"
+notification_symbol = "*"