automate release process using goreleaser and github actions

- Adds goreleaser config yaml
- Ignore goreleaser's `dist` directory which is used as the build / distribution directory
- Adds GitHub Action workflow config yaml for automatic release using goreleaser on push of git tag

Fixes #37

Signed-off-by: Karuppiah Natarajan <karuppiahn@vmware.com>

.github/workflows/release.yml

@@ -0,0 +1,33 @@
+name: goreleaser
+
+on:
+  push:
+    tags:
+      - "*"
+
+permissions:
+  contents: write
+
+jobs:
+  goreleaser:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      -
+        name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.16
+      -
+        name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v2
+        with:
+          distribution: goreleaser
+          version: latest
+          args: release --rm-dist
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -1,3 +1,4 @@
 depstat
 .DS_Store
-bin
+bin
+dist/

.goreleaser.yml

@@ -0,0 +1,34 @@
+before:
+  hooks:
+    - go mod tidy
+
+builds:
+  - env:
+      - CGO_ENABLED=0
+    goos:
+      - linux
+      - windows
+      - darwin
+    ldflags:
+      - -X github.com/kubernetes-sigs/depstat/cmd.DepstatVersion={{.Version}}
+
+archives:
+  - replacements:
+      darwin: Darwin
+      linux: Linux
+      windows: Windows
+      386: i386
+      amd64: x86_64
+
+checksum:
+  name_template: 'checksums.txt'
+
+snapshot:
+  name_template: "{{ incpatch .Version }}-next"
+
+changelog:
+  sort: asc
+  filters:
+    exclude:
+      - '^docs:'
+      - '^test:'