feat(ci): github actions

Signed-off-by: Carlos Alexandro Becker <caarlos0@gmail.com>

.github/workflows/build.yml

@@ -0,0 +1,56 @@
+name: build
+
+on:
+  push:
+    branches:
+      - 'master'
+    tags:
+      - 'v*'
+  pull_request:
+
+jobs:
+  build:
+    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: 1.14
+      -
+        name: Cache Go modules
+        uses: actions/cache@v1
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+      -
+        name: Make Setup
+        run: |
+          make setup
+      -
+        name: Make CI
+        run: |
+          make ci
+      -
+        name: Upload coverage
+        uses: codecov/codecov-action@v1
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          file: ./coverage.txt
+      -
+        name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v2
+        if: success() && startsWith(github.ref, 'refs/tags/')
+        with:
+          version: latest
+          args: release --rm-dist
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+

.github/workflows/gosum.yml

@@ -0,0 +1,40 @@
+name: gosum
+
+on:
+  push:
+    branches:
+      - 'master'
+    paths:
+      - '.github/workflows/gosum.yml'
+      - 'go.mod'
+      - 'go.sum'
+
+jobs:
+  fix:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.14
+      -
+        name: Tidy
+        run: |
+          rm -f go.sum
+          go mod tidy
+      -
+        name: Create Pull Request
+        uses: peter-evans/create-pull-request@v2
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          commit-message: "chore(deps): go mod tidy"
+          title: "chore(deps): go mod tidy"
+          body: |
+            Current `go.mod` and `go.sum` don't match the source code.
+          branch: go-mod-tidy
+          branch-suffix: timestamp
+          labels: automerge