Added golangci to the current GitHub Wokflow

.github/workflows/build.yaml

@@ -4,11 +4,33 @@ on:
     branches:
       - master
   pull_request:
-  
-jobs:          
+
+jobs:
+  lint:
+    name: golangci-lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Run golangci-lint
+        uses: golangci/golangci-lint-action@v2.2.0
+        with:
+          # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
+          version: v1.29
+          args: --timeout 5m
+          working-directory: cmd/httpx/
+
+          # Optional: working directory, useful for monorepos
+          # working-directory: somedir
+
+          # Optional: golangci-lint command line arguments.
+          # args: --issues-exit-code=0
+
+          # Optional: show only new issues if it's a pull request. The default value is `false`.
+          # only-new-issues: true
   build:
     name: Build
-    runs-on: ubuntu-latest 
+    runs-on: ubuntu-latest
     steps:
       - name: Set up Go
         uses: actions/setup-go@v2
@@ -24,4 +46,4 @@ jobs:
 
       - name: Build
         run: go build .
-        working-directory: cmd/httpx/
+        working-directory: cmd/httpx/