ci: setup workflow for molecule testing

Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>

.github/workflows/test.yml

@@ -0,0 +1,26 @@
+name: 'Molecule Test'
+on:
+  pull_request: { }
+  push: { }
+
+jobs:
+  lint:
+    name: 'Test'
+    runs-on: ubuntu-latest
+    steps:
+      - name: 'Checkout'
+        uses: actions/checkout@v4
+
+      - name: Cache .venv directory
+        uses: actions/cache@v3
+        with:
+          path: .venv
+          key: ${{ runner.os }}-venv-${{ hashFiles('**/requirements.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-venv-
+
+      - name: Converge
+        run: |
+          make init-venv
+          
+          make molecule-converge