.github/workflows/04-maven-nit.yml: prepare to run with NUT

Signed-off-by: Jim Klimov <jimklimov@gmail.com>

Author: jimklimov

.github/workflows/04-maven-nit.yml

@@ -0,0 +1,72 @@
+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+name: "GHA-04: Maven NIT"
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ "master" ]
+  schedule:
+    - cron: '22 12 * * 0'
+  workflow_dispatch:
+    # Allow manually running the action, e.g. if disabled after some quietness in the source
+
+jobs:
+  maven-NIT:
+    name: "Compile the project, test against NUT data server"
+    runs-on: ${{ matrix.os }}
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        compilerpkg: [ 'openjdk-21-jdk' ]
+          # TOTHINK: various JDK versions?
+        os: [ 'ubuntu-latest' ]
+          # TOTHINK: windows-latest, macos-latest?
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+
+    # Using hints from https://askubuntu.com/questions/272248/processing-triggers-for-man-db
+    - if: matrix.os == 'ubuntu-latest'
+      name: NUT CI Prerequisite packages (Ubuntu)
+      run: |
+        echo "set man-db/auto-update false" | sudo debconf-communicate
+        sudo dpkg-reconfigure man-db
+        sudo apt update
+        sudo apt install ${{ matrix.compilerpkg }} maven nut
+        date > .timestamp-init
+
+    - name: Prepare maven cache
+      # Based on https://docs.github.com/en/actions/reference/workflows-and-actions/dependency-caching#example-using-the-cache-action example
+      id: cache-m2cache
+      uses: actions/cache@v4
+      env:
+        cache-name: cache-m2cache-
+      with:
+        path: |
+            ~/.m2
+        key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/.timestamp-init') }}
+        restore-keys: |
+          ${{ runner.os }}-build-${{ env.cache-name }}-
+          ${{ runner.os }}-build-
+          ${{ runner.os }}-
+
+    # ℹ️ Command-line programs to run using the OS shell.
+    # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
+
+    - name: Maven build and test
+      run: mvn package
+
+    # TODO: Setup NUT, run client (add in-tree script for that and call it)