Pydoctest

Support python3.10 union types
- Fixes https://github.com/jepperaskdk/pydoctest/issues/46

Fixes:
- https://github.com/jepperaskdk/pydoctest/issues/40

Issue was multiline-strings in source-code, not getting dedented by the `textwrap.dedent` function.

Implements:
- [Exclude patterns](https://github.com/jepperaskdk/pydoctest/issues/36)

Fixes literal types for the google parser.
https://github.com/jepperaskdk/pydoctest/issues/41

Improved the google-parser by splitting sections in a better way. Fixes these bugs [29](https://github.com/jepperaskdk/pydoctest/issues/29)

NOTE: It also removes support for the (..., optional) syntax. Better to type using `Optional[X]` both in signature and docstring.

- Support for recursive globbing with `**`
- Support for exclude_paths to exclude files based on patterns
- CLI support for both `--include-paths` and `--exclude-paths`