feat(ci): add github action 🏗

Author: vinayakkulkarni

.github/workflows/shipjs-manual-prepare.yml

@@ -0,0 +1,52 @@
+name: Ship js Manual Prepare
+on:
+  issue_comment:
+    types: [created]
+jobs:
+  manual_prepare:
+    if: |
+      github.event_name == 'issue_comment' &&
+      (github.event.comment.author_association == 'member' || github.event.comment.author_association == 'owner') &&
+      startsWith(github.event.comment.body, '@shipjs prepare')
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+          ref: master
+      - uses: actions/setup-node@v1
+      - run: |
+          if [ -f "yarn.lock" ]; then
+            yarn install
+          else
+            npm install
+          fi
+      - run: |
+          git config --global user.email "github-actions[bot]@users.noreply.github.com"
+          git config --global user.name "github-actions[bot]"
+      - run: npm run release:prepare -- --yes --no-browse
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          SLACK_INCOMING_HOOK: ${{ secrets.SLACK_INCOMING_HOOK }}
+
+  create_done_comment:
+    if: success()
+    needs: manual_prepare
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/github@master
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          args: comment "@${{ github.actor }} `shipjs prepare` done"
+
+  create_fail_comment:
+    if: cancelled() || failure()
+    needs: manual_prepare
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/github@master
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          args: comment "@${{ github.actor }} `shipjs prepare` fail"

.github/workflows/shipjs-trigger.yml

@@ -0,0 +1,29 @@
+name: Ship js trigger
+on:
+  push:
+    branches:
+      - master
+jobs:
+  build:
+    name: Release
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          ref: master
+          
+      - uses: actions/setup-node@v1
+        with:
+          registry-url: "https://npm.pkg.github.com"
+      - run: |
+          if [ -f "yarn.lock" ]; then
+            yarn install
+          else
+            npm install
+          fi
+      
+      - run: npm run release:trigger
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          SLACK_INCOMING_HOOK: ${{ secrets.SLACK_INCOMING_HOOK }}