Add Github Actions workflow (#112)

* Add Github Actions workflow
---

*Motivation*

Using Github Actions to release the binary and create a release note draft

* Address comments

Co-Authored-By: Sijie Guo <[email protected]>

.github/release-drafter.yml

@@ -0,0 +1,3 @@
+template: |
+  ## What's changed
+  $CHANGES

.github/workflows/release-note.yml

@@ -0,0 +1,17 @@
+name: Release
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: release note
+        uses: toolmantim/release-drafter@master
+        env:
+          GITHUB_TOKEN: ${{ secrets.TEST_TOKEN }}

.github/workflows/release.yml

@@ -0,0 +1,27 @@
+name: release
+
+on:
+  release:
+
+jobs:
+  upload:
+    name: Upload go build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions/setup-go@v1
+        with:
+          go-version: 1.12
+        id: go
+
+      - name: build
+        run: |
+          version=`cat VERSION`
+          go build -ldflags "-X github.com/streamnative/pulsarctl/pkg/pulsar.ReleaseVersion=Pulsarctl-Go-$version" .
+
+      - name: publish
+        uses: skx/github-action-publish-binaries@master
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          args: 'pulsarctl'

VERSION

@@ -0,0 +1 @@
+v0.1.0