Add woodpecker ci file

Added basic continuous integration tests to run on any push.

.woodpecker.yml

@@ -0,0 +1,23 @@
+pipeline:
+  unit_tests:
+    image: mquade/poetry:3.9-1.1.11
+    commands:
+      - poetry config virtualenvs.create false
+      - poetry install
+      - pytest
+
+  code_lint:
+    image: mquade/poetry:3.9-1.1.11
+    commands:
+      - poetry config virtualenvs.create false
+      - poetry install
+      - pip install black
+      - black .
+
+  static_analysis:
+    image: mquade/poetry:3.9-1.1.11
+    commands:
+      - poetry config virtualenvs.create false
+      - poetry install
+      - pip install mypy
+      - mypy .