Add github workflow for unit tests on PRs

.github/workflows/test.yml

@@ -0,0 +1,33 @@
+name: Unit Tests
+
+on:
+  pull_request:
+    branches:
+      - '**' 
+
+jobs:
+  build-and-test:
+    runs-on: ubuntu-20.04
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Install Dependencies
+      run: sudo apt-get install -y libeigen3-dev libgtest-dev
+
+    - name: Build Project
+      run: |
+        mkdir build
+        cd build
+        cmake .. -DBUILD_TESTS=ON
+        make
+        pwd
+        ls
+    
+    - name: Run Tests
+      run: |
+        pwd
+        ls
+        .build/test/unit_tests
+