chore: build pr-antora-content-guidelines-checker with node 20 (#128)

It was previously built with node 16 which is EOL.
Add a GH workflow to validate that the build the action is working.

closes #116 (already done with other PR)
closes #118

.github/workflows/build_pr_antora_checker.yml

@@ -0,0 +1,27 @@
+name: Build PR antora content guidelines checker
+
+on:
+ push:
+ branches: [ main ]
+ paths:
+ - 'packages/pr-antora-content-guidelines-checker/*'
+ pull_request:
+ branches: [ main ]
+ paths:
+ - 'packages/pr-antora-content-guidelines-checker/*'
+
+ workflow_dispatch:
+
+jobs:
+ build:
+ runs-on: ubuntu-20.04
+
+ steps:
+ - uses: actions/checkout@v4
+ - name: Setup node
+ uses: actions/setup-node@v4
+ with:
+ node-version-file: 'packages/pr-antora-content-guidelines-checker/.nvmrc'
+ - name: Install and Test
+ run: npm ci && npm run package:all
+ working-directory: packages/pr-antora-content-guidelines-checker

packages/pr-antora-content-guidelines-checker/.nvmrc

@@ -1 +1 @@
-16
+20