chore/update dev environment

[d-v-b]

this builds on #19 to configure the developer environment

• uses hatch as a task runner
• configures git-tag-based versioning
• configures documentation via mkdocs-material (there is no docs content yet)
• configures readthedocs
• sets up pre-commit hooks for linting and repo quality checks
• lints the codebase (we have a lot of failing pre-commit hooks, but that's OK right now)
• adds an environment for testing the upstream versions of packages this library depends on.

[d-v-b]

closes #25

[d-v-b]

this is ready for review. The new stringent pre-commit checks are generally failing, but we can address that in later PRs.

[d-v-b]

@dimitri-yatsenko please have a look