chore: add linter

.github/workflows/go.yml

@@ -7,6 +7,16 @@ on:
 
 jobs:
 
+  golangci-lint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v2
+        with:
+          version: v1.36
+
   build:
     name: Build
     runs-on: ubuntu-latest

.golangci.yml

@@ -0,0 +1,31 @@
+run:
+  skip-dirs:
+    - pkg/analyzer/testdata
+
+linters-settings:
+  golint:
+    min-confidence: 0
+  goconst:
+    min-len: 2
+    min-occurrences: 3
+  misspell:
+    locale: US
+  gci:
+    local-prefixes: github.com/kulti/thelper
+
+linters:
+  enable-all: true
+  disable:
+  - lll
+  - prealloc
+  - dupl
+  - wsl
+  - nlreturn
+  - goerr113
+  - exhaustivestruct
+  - paralleltest
+  - testpackage
+  - gomnd
+  - gocognit
+  - nestif
+  - interfacer