Add .env file for configuration, update db connection to use environment variables, and enhance requirements

db.py

@@ -2,7 +2,6 @@ import mariadb
 import logging
 
 
-
 #Logging
 
 logging.basicConfig(
@@ -18,14 +17,14 @@ except Exception as e:
     logging.exception('An error occurred')
 
 
-def connect():
+def connect(db_user, db_psswd, db_host, db_port, db_name):
     try:
         global connection
-        connection = mariadb.connect(user="luggage",
-            password="13579,QsC",
-            host="192.168.1.74",
-            port=3307,
-            database="canada_luggage")
+        connection = mariadb.connect(user=db_user,
+            password=db_psswd,
+            host=db_host,
+            port=db_port,
+            database=db_name)
         print("Connected to MariaDB successfully!")
         logging.info("Connected to MariaDB successfully!")