Add linter

.github/workflows/lint.yml

@@ -0,0 +1,29 @@
+name: Lint
+# Lint runs golangci-lint over the entire cosmos-sdk repository
+# This workflow is run on every pull request and push to master
+# The `golangci` will pass without running if no *.{go, mod, sum} files have been changed.
+on:
+  pull_request:
+  push:
+    branches:
+      - develop
+jobs:
+  golangci:
+    name: golangci-lint
+    runs-on: ubuntu-latest
+    timeout-minutes: 6
+    steps:
+      - uses: actions/checkout@v2
+      - uses: technote-space/get-diff-action@v4
+        with:
+          PATTERNS: |
+            **/**.go
+            go.mod
+            go.sum
+      - uses: golangci/golangci-lint-action@master
+        with:
+          # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
+          version: v1.40
+          args: --timeout 10m
+          github-token: ${{ secrets.github_token }}
+        if: env.GIT_DIFF