Ckanext-userdatasets

Style

- change quotes in setup.py to single quotes

Build System(s)

- include top-level data files in theme folder
- add package data

Docs

- **readme**: format test section
- **readme**: update installation steps
- **readme**: update ckan patch version in header badge

Docs

- add section delimiters and include-markdown

Style

- apply formatting

Build System(s)

- set changelog generation to incremental
- pin ckantools minor version

CI System(s)

- add cz-nhm dependency

Chores/Misc

- use cz_nhm commitizen config
- standardise package files