actions: add tidy action

.github/workflows/tidy.yml

@@ -0,0 +1,13 @@
+name: Go Tidy
+on: [push]
+jobs:
+
+  build:
+    name: Go mod tidy check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: katexochen/go-tidy-check@v1
+        with:
+          # (Optional) The path to the root of each modules, space separated. Default is the current directory.
+          modules: . ./...