Add vcpkg dependency caching to speed up builds

Author: Cheaterdev

.github/workflows/build.yml

@@ -19,6 +19,14 @@ jobs:
       with:
         dotnet-version: '8.0.x'
 
+    - name: Cache vcpkg dependencies
+      uses: actions/cache@v4
+      with:
+        path: ./vcpkg_installed
+        key: vcpkg-${{ runner.os }}-${{ hashFiles('vcpkg.json', 'vcpkg-configuration.json') }}
+        restore-keys: |
+          vcpkg-${{ runner.os }}-
+
     - name: Setup project
       shell: cmd
       run: setup.bat