add mailaccount endpoint

kontor-api/src/apis/version1/admin/mailaccount.py

@@ -0,0 +1,23 @@
+from typing import List
+
+from fastapi import APIRouter
+
+from src.db.models.admin import MailAccount
+from src.db.session import SessionDep
+from src.schema.admin import MailAccountResponse, to_response
+
+
+router = APIRouter()
+
+
+@router.get("/mailaccounts", response_model=List[MailAccountResponse])
+def get_all_mailaccounts(db: SessionDep) -> List[MailAccountResponse]:
+    """
+    return all MailAccounts as JSON.
+    """
+    results: List[MailAccountResponse] = []
+    players = db.query(MailAccount).all()
+    for player in players:
+        response = to_response(player)
+        results.append(response)
+    return results