Add Woodpecker CI pipeline

.woodpecker.yaml

@@ -0,0 +1,25 @@
+when:
+  branch: main
+  event: [push, pull_request]
+
+steps:
+  - name: analyze
+    image: ghcr.io/cirruslabs/flutter:stable
+    commands:
+      - flutter pub get
+      - dart analyze
+
+  - name: test
+    image: ghcr.io/cirruslabs/flutter:stable
+    commands:
+      - flutter pub get
+      - flutter test
+
+  - name: build-web
+    image: ghcr.io/cirruslabs/flutter:stable
+    commands:
+      - flutter pub get
+      - flutter build web --release
+    when:
+      branch: main
+      event: push