feat: add webapi, lower python version requirement and add a Dockerfile

.pre-commit-config.yaml

@@ -29,7 +29,7 @@ repos:
       - id: mypy
         exclude: ^(docs/|example-plugin/)
         args: [--ignore-missing-imports]
-        additional_dependencies: [types-requests]
+        additional_dependencies: [types-requests, PyPDF2]
   - repo: https://github.com/adrienverge/yamllint.git
     rev: v1.35.1
     hooks: