Update cmake-multi-platform.yml

Adding possibility to run workflow on all branches and also manually. Additionally, adding submodule checkout.

Author: PapeCoding

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

@@ -4,9 +4,8 @@ name: CMake on multiple platforms
 
 on:
   push:
-    branches: [ "main" ]
   pull_request:
-    branches: [ "main" ]
+  workflow_dispatch: 
 
 jobs:
   build:
@@ -46,6 +45,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
+      with:
+        submodules: 'recursive'
 
     - 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.