Add Sourcery to pre-commit (#38)

Author: lqmanh

.pre-commit-config.yaml

@@ -31,7 +31,13 @@ repos:
     rev: 21.9b0
     hooks:
       - id: black
+
   - repo: https://github.com/pre-commit/mirrors-prettier
     rev: v2.4.1
     hooks:
       - id: prettier
+
+  - repo: https://github.com/sourcery-ai/sourcery
+    rev: v0.9.6
+    hooks:
+      - id: sourcery