feat: install vitest unit test runner (#143)

Co-authored-by: Gabriel Tibúrcio <v-gtiburcio@mparticle.com>
Co-authored-by: tibuurcio <tibuurcio@users.noreply.github.com>

.github/workflows/unit-tests.yml

@@ -0,0 +1,18 @@
+name: Unit Tests
+on: push
+jobs:
+  test:
+    name: Unit Tests
+    timeout-minutes: 5
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+
+      - name: Install Dependencies
+        run: npm ci
+
+      - name: Run Unit Tests
+        run: npm run test-unit