workflow: add build pipeline

.github/workflows/build.yml

@@ -0,0 +1,38 @@
+name: Build USB examples
+
+on:
+  push:
+    branches: ["develop"]
+    paths-ignore:
+      - 'README.md'
+  pull_request:
+    branches: ["develop"]
+    paths-ignore:
+      - 'README.md'
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        example: [
+            "mass-storage",
+            "usb-speaker",
+            "usb-video"
+        ]
+    runs-on: ubuntu-latest
+    container: devkitpro/devkitarm:20241104
+    name: Build with Docker using devkitARM
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+      - name: Build example
+        run: |
+            cd examples/${{ matrix.example }}
+            make
+      - name: Publish build to GH Actions
+        uses: actions/upload-artifact@v4
+        with:
+          path: examples/${{ matrix.example }}/${{ matrix.example }}.nds
+          name: ${{ matrix.example }}

.github/workflows/release.yml

@@ -0,0 +1,37 @@
+name: Build USB examples release
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        example: [
+            "mass-storage",
+            "usb-speaker",
+            "usb-video"
+        ]
+    runs-on: ubuntu-latest
+    container: devkitpro/devkitarm:20241104
+    name: Build with Docker using devkitARM
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+      - name: Build example
+        run: |
+            cd examples/${{ matrix.example }}
+            make
+      - name: Publish build to GH Actions
+        uses: actions/upload-artifact@v4
+        with:
+          path: examples/${{ matrix.example }}/${{ matrix.example }}.nds
+          name: ${{ matrix.example }}
+      - name: Release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: |
+            examples/${{ matrix.example }}/${{ matrix.example }}.nds