Prepare for moving to DefinitelyTyped org

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
       matrix:
         node: [ '10', '12' ]
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - uses: actions/setup-node@v1
       with:
         node-version: ${{ matrix.node }}

.github/workflows/publish.yml

@@ -0,0 +1,23 @@
+on:
+  release:
+    types: [created]
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-node@v1
+      with:
+        node-version: 12.x
+        registry-url: https://npm.pkg.github.com
+        scope: '@definitelytyped'
+    - name: lint
+      run: npm run lint
+    - name: test
+      run: npm test
+    - name: version
+      run: lerna version ${{ GITHUB_REF }}
+    - name: publish
+      run: lerna publish from-git --yes
+      env:
+        NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}