Add CI (if it works)

.woodpecker.yml

@@ -0,0 +1,36 @@
+workspace:
+  base: /data
+  path: sources
+
+pipeline:
+  build:
+    image: dock.mau.dev/maubot/maubot:latest
+    commands:
+      - mbc build
+  release:
+    image: plugins/gitea-release
+    settings:
+      base_url: https://git.dennogumi.org
+      api_key:
+        from_secret: gitea_token
+      files:
+        - /data/sources/*.mbp
+      checksum:
+        - sha256
+    when:
+      event: tag
+  notify:
+    image: plugins/matrix
+    settings:
+      homeserver: https://conference.heavensinferno.net
+      roomid:
+        from_secret: roomid
+      accesstoken:
+        from_secret: access_token
+      userid:
+        from_secret: user_id
+    when:
+      status:
+        - failure
+        - success
+