add install cmake to workflow

.gitea/workflows/unit_tests.yaml

@@ -0,0 +1,34 @@
+name: Build and Run C++ Unit Tests
+
+on:
+  push:
+    branches:
+      - CI
+  pull_request:
+    branches:
+      - CI
+
+jobs:
+  build-and-test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Install Dependencies
+        run: |
+          apt-get update
+          apt-get install -y cmake # Install required packages
+
+      - name: Build the Project
+        run: |
+          mkdir build
+          cd build
+          cmake ..
+          make  # Build the LinearAlgebra library and tests
+
+      - name: Run Unit Tests
+        run: |
+          cd build
+          ./LinearAlgebraTest  # Execute the test binary