Refactor SDL/FreeRTOS implementation to support macOS simulator properly (#653)

- Run SDL from main() and place FreeRTOS in separate thread. This fixes macOS support.
- Updated GitHub Actions to publish macOS simulator build for testing, updated amd64 to x86_64 for consistent naming.

.github/actions/build-simulator/action.yml

@@ -4,11 +4,8 @@ inputs:
   os_name:
     description: A descriptive name for the operating system (e.g. linux, windows)
     required: true
-  platform_name:
-    description: A descriptive name for the target platform (e.g. amd64, aarch64, etc.)
-    required: true
-  publish:
-    description: A boolean that enables publishing of artifacts
+  architecture:
+    description: A descriptive name for the target architecture (e.g. x86_64, aarch64, etc.)
     required: true
 
 runs:
@@ -48,11 +45,10 @@ runs:
       run: cmake --build buildsim --target Tactility
     - name: 'Release'
       shell: bash
-      run: Buildscripts/release-simulator.sh buildsim release/Simulator-${{ inputs.os_name }}-${{ inputs.platform_name }}
+      run: Buildscripts/release-simulator.sh buildsim release/Simulator-${{ inputs.os_name }}-${{ inputs.architecture }}
     - name: 'Upload Artifact'
       uses: actions/upload-artifact@v4
-      if: ${{ inputs.publish == 'true' }}
       with:
-        name: Simulator-${{ inputs.os_name }}-${{ inputs.platform_name }}
-        path: release/Simulator-${{ inputs.os_name }}-${{ inputs.platform_name }}
+        name: Simulator-${{ inputs.os_name }}-${{ inputs.architecture }}
+        path: release/Simulator-${{ inputs.os_name }}-${{ inputs.architecture }}
         retention-days: 30

.github/workflows/build-simulator.yml

@@ -17,8 +17,7 @@ jobs:
         uses: ./.github/actions/build-simulator
         with:
           os_name: linux
-          platform_name: amd64
-          publish: true
+          architecture: x86_64
   macOS:
     runs-on: macos-latest
     steps:
@@ -29,6 +28,4 @@ jobs:
         uses: ./.github/actions/build-simulator
         with:
           os_name: macos
-          platform_name: aarch64
-          # macOS simulator currently fails due to main thread requirement for rendering
-          publish: false
+          architecture: aarch64