Created modules and organized code

models/credential.py

@@ -0,0 +1,11 @@
+class Credential:
+    def __init__(self, username: str, password: str):
+        self.username = username
+        self.password = password
+
+    def to_dict(self) -> dict:
+        return {"username": self.username, "password": self.password}
+
+    @classmethod
+    def from_dict(cls, data: dict):
+        return cls(data.get("username", ""), data.get("password", ""))