Add publish GH action

.github/workflows/publish.yml

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+name: Publish
+
+permissions:
+  id-token: write
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  publish:
+    name: Typir Publish
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+    - name: Use Node.js
+      uses: actions/setup-node@v3
+      with:
+        node-version: '18.x'
+        registry-url: 'https://registry.npmjs.org'
+    - name: Build
+      shell: bash
+      run: |
+        npm ci
+        npm run clean
+        npm run build
+    - name: Test
+      if: success() || failure()
+      shell: bash
+      run: |
+        npm run test
+    - name: Publish NPM Packages
+      shell: bash
+      env:
+        NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+      # Update the following list when a new npm package is added
+      run: |
+        npm run publish:latest --provenance --workspace=typir
+        npm run publish:latest --provenance --workspace=typir-langium

RELEASE.md

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+# Release Process
+
+The release process is mostly automated and requires running only a few commands. After commiting, pushing, tagging and releasing the changes, a GitHub Action will publish all npm packages.
+
+1. Pull the latest changes
+2. Uplift the package versions
+   Run `npm version major|minor|patch --no-git-tag-version --workspaces`
+3. Update the dependency versions
+   Run `npm run version:dependencies`
+4. Create a PR with your updated changes, get a review and merge it
+5. Create a version tag on the latest commit on main and push it
+6. Create a GitHub release from the new tag (this will automatically publish all artifacts)