Add build and release pipelines

.github/workflows/build.yml

@@ -0,0 +1,34 @@
+name: build
+
+on:
+  push:
+    tags: [v**]
+
+jobs:
+  build:
+    runs-on: windows-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: 1.22.x
+
+      - name: Run tests
+        shell: bash
+        run: |
+          go test -v -race -covermode=atomic ./...
+
+      - name: Build artifact
+        shell: bash
+        run: |
+          go build -trimpath -ldflags "-w -s" -o spoon.exe ./cmd/spoon
+
+      - name: Upload build artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: spoon.exe
+          path: spoon.exe
+

.github/workflows/release.yml

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+name: release
+
+on:
+  workflow_run:
+    workflows: [build]
+    branches: [v**]
+    types: [completed]
+
+jobs:
+  publish-release:
+    runs-on: ubuntu-latest
+    # Kinda bad since it might release on any branch starting with v, but it'll do for now.
+    # Tag filtering in "on:" doesn't work, since the inital build trigger gets lost.
+    # github.ref is therefore also being reset to "refs/head/master".
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
+
+    steps:
+      - name: Download windows artifact
+        uses: dawidd6/action-download-artifact@v3
+        with:
+          workflow: build.yml
+          name: spoon.exe
+
+      - name: Create release
+        uses: softprops/action-gh-release@v1
+        with:
+          name: ${{ github.event.workflow_run.head_branch }}
+          tag_name: ${{ github.event.workflow_run.head_branch }}
+          files: |
+            spoon.exe