Implement repository

requirements.txt

@@ -1,2 +1,3 @@
 loguru
 aiogram
+asyncpg

services/repository.py

@@ -1,5 +1,8 @@
+from asyncpg.connection import Connection
+
+
 class Repo:
     """Db abstraction layer"""
 
-    def __init__(self):
+    def __init__(self, conn: Connection):
-        pass
+        self.conn = conn