Renamed classes.py into decrypted_accounts.py. Removed unnessesary elements from that file

src/decrypted_account.py

@@ -0,0 +1,8 @@
+import pydantic
+
+
+class DecryptedAccount(pydantic.BaseModel):
+    user_id: int
+    name: str
+    login: str
+    password: str