Add dllbuild to CI

.github/workflows/ci.yml

@@ -72,3 +72,38 @@ jobs:
         path: scripts/prefix
         # An explicit key for restoring and saving the cache
         key: ${{ steps.cache-toolchain.outputs.cache-primary-key }}
+
+  build-dll:
+    runs-on: windows-latest
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        submodules: true
+    - name: Get toolchain from cache
+      id: cache-toolchain
+      uses: actions/cache/restore@v3
+      with:
+        # A directory to store and save the cache
+        path: scripts/prefix
+        # An explicit key for restoring and saving the cache
+        key: prefix-${{hashFiles('scripts/create_devenv.py')}}
+    - if: ${{ steps.cache-toolchain.outputs.cache-hit != 'true' }}
+      name: Install prefix
+      id: install_prefix
+      run: python scripts/create_devenv.py scripts/dls scripts/prefix
+    - name: Build binary
+      run: python scripts/build.py --build-type dllbuild
+    - uses: actions/upload-artifact@v3
+      with:
+        name: th06e-dll
+        path: |
+          build/th06e.dll
+          build/th06e.pdb
+    - if: always() && steps.cache-toolchain.outputs.cache-hit != 'true' && steps.install_prefix.outcome == 'success'
+      name: Save toolchain to cache
+      uses: actions/cache/save@v3
+      with:
+        # A directory to store and save the cache
+        path: scripts/prefix
+        # An explicit key for restoring and saving the cache
+        key: ${{ steps.cache-toolchain.outputs.cache-primary-key }}