Add qemu binary release workflow:

Add a new workflow that will build and prepare qemu binaries for both
Windows and Linux. This workflow has three triggers:

1. A pull request to the main branch, which will only trigger when
either the workflow itself, or the qemu version file is updated. This
workflow will upload the binaries as an artifact to the workflow.

2. A release, which will upload the binaries as an artifact to the
associated release

3. A manual trigger, which allows for testing the workflow on a custom
branch. This will upload the binaries as an artifact to the workflow.

.github/publish-qemu-config.yml

@@ -0,0 +1,4 @@
+{
+    "windows": "2023.7.25",
+    "linux": "v8.0.0"
+}

.github/workflows/publish-qemu-bin.yml

@@ -0,0 +1,163 @@
+name: Publish Qemu External Dependency
+
+on:
+  workflow_dispatch:
+  release:
+    types: [published]
+  pull_request:
+    branches:
+      - main
+    paths:
+      - .github/workflows/publish-qemu-bin.yml
+      - .github/publish-qemu-config.yml
+
+env:
+  QEMU_VERSION_FILE: .github/publish-qemu-config.yml
+
+jobs:
+  qemu-windows:
+    name: Build Qemu for Windows
+    runs-on: windows-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Get current Qemu version
+      id: qemu-version
+      run: |
+        $qemuVersion = (Get-Content -Path $env:QEMU_VERSION_FILE | ConvertFrom-Json).windows
+        "QEMU_VERSION=$qemuVersion" | Out-File -FilePath "$env:GITHUB_OUTPUT" -Append
+      shell: pwsh
+    - name: Download Qemu v${{ steps.qemu-version.outputs.QEMU_VERSION }}
+      env:
+        QEMU_VERSION: ${{ steps.qemu-version.outputs.QEMU_VERSION }}
+      run: |
+        choco install qemu --version=$env:QEMU_VERSION
+    - name: Stage Qemu Binaries
+      run: |
+        mkdir temp
+        mkdir temp\share
+        cp "C:\Program Files\qemu\qemu-system-x86_64.exe" temp
+        cp "C:\Program Files\qemu\qemu-system-aarch64.exe" temp
+        cp "C:\Program Files\qemu\share\kvmvapic.bin" temp\share
+        cp "C:\Program Files\qemu\share\vgabios-cirrus.bin" temp\share
+        cp "C:\Program Files\qemu\share\vgabios-stdvga.bin" temp\share
+        Get-ChildItem -Path "C:\Program Files\qemu" -Filter *.dll | Move-Item -Destination "temp"
+        
+    - name: Upload Qemu Artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: qemu-windows
+        path: |
+          temp\*
+        if-no-files-found: error
+
+  qemu-linux:
+    name: Build Qemu for Linux
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Get current Qemu version
+      id: qemu-version
+      run: |
+        qemuVersion=$(jq -r .linux $QEMU_VERSION_FILE)
+        echo "QEMU_VERSION=$qemuVersion" >> $GITHUB_OUTPUT
+      shell: bash
+    - name: Install Dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install --yes --no-install-recommends \
+          autoconf \
+          automake \
+          autotools-dev \
+          bc \
+          build-essential \
+          dosfstools \
+          gcc \
+          libglib2.0-dev \
+          libgtk-3-dev \
+          libpixman-1-dev \
+          libsdl2-dev \
+          mtools \
+          ninja-build \
+          tar
+    - name: Compile Qemu ${{ steps.qemu-version.outputs.QEMU_VERSION }}
+      env:
+        QEMU_VERSION: ${{ steps.qemu-version.outputs.QEMU_VERSION }}
+        QEMU_URL: "https://gitlab.com/qemu-project/qemu.git"
+        DEBIAN_FRONTEND: "noninteractive"
+      run: |
+        git clone $QEMU_URL --branch $QEMU_VERSION --depth 1 qemu
+        cd qemu
+        mkdir bin
+        cd bin
+        ./../configure --target-list=x86_64-softmmu,aarch64-softmmu --enable-gtk
+        sudo make -j $(nproc)
+    - name: Stage Qemu Binaries
+      run: |
+        mkdir -p temp/share
+        cp qemu/bin/qemu-system-x86_64 qemu/bin/qemu-system-aarch64 temp
+        cp qemu/bin/qemu-bundle/usr/local/share/qemu/vgabios-cirrus.bin temp/share
+        cp qemu/bin/qemu-bundle/usr/local/share/qemu/vgabios-stdvga.bin temp/share
+        cp qemu/bin/qemu-bundle/usr/local/share/qemu/kvmvapic.bin temp/share
+    - name: Upload Qemu Artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: qemu-linux
+        path: |
+          temp/*
+        if-no-files-found: error
+
+  prepare-extdep:
+    name: Prepare and Upload Qemu External Dependency
+    needs: [qemu-windows, qemu-linux]
+    runs-on: Ubuntu-latest
+    permissions:
+      contents: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Install dependencies
+        run: |
+          pip install edk2-pytool-extensions
+      - name: Download Windows Qemu Artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: qemu-windows
+          path: windows
+      - name: Download Linux Qemu Artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: qemu-linux
+          path: linux
+      - name: Stage Ext-Dep
+        run: |
+          mkdir -p qemu
+          mv windows/ qemu/Windows/
+          mv linux/ qemu/Linux/
+          ls qemu/Windows
+          ls qemu/Linux
+          chmod a+x qemu/Linux/*
+      - name: Package Ext-Dep
+        run: |
+          zip -r qemu-${{github.event.release.tag_name}}.zip qemu/*
+          tar -czf qemu-${{github.event.release.tag_name}}.tar.gz qemu/*
+
+      - name: Upload Ext-Dep (Artifact)
+        uses: actions/upload-artifact@v4
+        if: github.event_name == 'workflow_dispatch' || github.event_name == 'pull_request'
+        with:
+          name: qemu-extdep-binaries
+          path: |
+            qemu-*.zip
+            qemu-*.gz
+      - name: Upload Ext-Dep (Release)
+        if: github.event_name == 'release'
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          gh release upload ${{ github.event.release.tag_name }} qemu-*.zip
+          gh release upload ${{ github.event.release.tag_name }} qemu-*.tar.gz