chore: add ci workflow for tests

Author: ibsule

.github/workflows/test.yml

@@ -0,0 +1,20 @@
+name: Test Cohort 4 Contracts
+on:
+  push:
+  pull_request:
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Starknet Foundry
+        uses: foundry-rs/setup-snfoundry@v3
+
+      - name: Setup Scarb
+        uses: software-mansion/setup-scarb@v1
+        with:
+          scarb-lock: ../../Scarb.lock
+
+      - name: Run tests
+        run: snforge test