Add .github/workflow/main.yml

This builds a windows version of ectool.

Signed-off-by: James Courtier-Dutton <james@superbug.co.uk>

Author: James Courtier-Dutton

.github/workflows/main.yml

@@ -0,0 +1,43 @@
+name: Build Windows/x64
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: windows-latest
+
+    steps:
+      - name: Checkout Repository with Submodules
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Create Build Directory
+        run: mkdir _build
+
+      - name: Configure with CMake
+        shell: pwsh
+        run: |
+          cd _build
+          & cmake -A x64 -T ClangCL ..
+
+      - name: Build with CMake
+        shell: pwsh
+        run: |
+          cd _build
+          & cmake --build . --config RelWithDebInfo --parallel
+
+      - name: Upload Build Artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: ectool
+          path: |
+            _build/src/RelWithDebInfo/ectool.exe
+            _build/src/RelWithDebInfo/ectool.pdb
+