Update woodpecker

Added basic continuous integration tests to run on any push.

.woodpecker.yml

@@ -1,3 +1,5 @@
+# branches: main
+
 pipeline:
   unit_tests:
     image: mquade/poetry:3.9-1.1.11
@@ -21,3 +23,26 @@ pipeline:
       - poetry install
       - pip install mypy
       - mypy .
+
+  build_dist:
+    image: mquade/poetry:3.9-1.1.11
+    commands:
+      - poetry config virtualenvs.create false
+      - poetry install
+      - poetry build
+    when:
+      branch: main
+
+  notify_matrix:
+    image: plugins/matrix
+    settings:
+      homeserver: https://matrix.org
+      roomid:
+        from_secret: matrix_roomid
+      userid:
+        from_secret: matrix_userid
+      accesstoken:
+        from_secret: matrix_token
+    when:
+      status: [ success, failure ]
+