Add vcpkg to actions

.github/workflows/cmake-multi-platform.yml

@@ -47,6 +47,8 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
+    - uses: lukka/run-vcpkg@v11
+
     - name: Set reusable strings
       # Turn repeated input strings (such as the build output directory) into step outputs. These step outputs can be used throughout the workflow file.
       id: strings