unit test workflow

.github/workflows/test.unit.code.yml

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+name: "test:unit test code with defined suites"
+
+on: push
+
+jobs:
+  # only (but most important) job from this workflow required for pull requests
+  # check results serve as run conditions for all other jobs here 
+  files-changed:
+    name: Detect File Changes - Frontend
+    runs-on: ubuntu-latest
+    outputs:
+      frontend: ${{ steps.changes.outputs.frontend }}
+    steps:
+      - uses: actions/checkout@v3.3.0
+
+      - name: Check for frontend file changes
+        uses: dorny/paths-filter@v2.11.1
+        id: changes
+        with:
+          token: ${{ github.token }}
+          filters: .github/file-filters.yml
+          list-files: shell
+
+  unit:
+    if: needs.files-changed.outputs.frontend == 'true'
+    name: Unit - Frontend
+    needs: files-changed
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Frontend | Unit
+        run: npm install && npm run test:unit