Add continuous integration pipeline

Added static analysis (lint, type checking) to be done on each push, and
testing to be done on each master branch commit.

.woodpecker/static_analysis.yml

@@ -0,0 +1,9 @@
+pipeline:
+  pyright:
+    image: nikolaik/python-nodejs
+    commands:
+      - npm install --global pyright
+      - poetry install
+      - python --version && poetry --version && pyright --version
+      - echo "------------- running pyright typecheck -------------"
+      - poetry run pyright