chore: use conventional commits and auto-generate changelog

.github/workflows/commitlint.yml

@@ -0,0 +1,11 @@
+name: Lint Commit Messages
+on: [pull_request]
+
+jobs:
+  commitlint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - uses: wagoid/commitlint-github-action@v4

.github/workflows/release.yml

@@ -12,4 +12,6 @@ jobs:
       - uses: actions/checkout@v2
       - uses: ncipollo/release-action@v1
         with:
-          body: Check CHANGELOG.md for details
+          body:
+            Please refer to
+            [CHANGELOG.md](https://github.com/go-redis/redis/blob/master/CHANGELOG.md) for details