Docs/versioned docs (#239)

* 🔧 build: add mkdocs to project

* 📝 docs: rewrite getting started page to mkdocs structure
note:
mkdocstrings still has to be added to support linking to library code

* 📝 docs: translate dash app integration page to mkdocs structure

* 📝 docs: translate FAQ page to mkdocs structure

* 🔧 build: add mkdocstrings dependency

* 🔧 build: add mkdocs-gen-files dependency

* 🔧 build: add automatic code API reference page creation

* 📝 docs: fix links to API documentation

* 📝 build: add mkdocs-section-index

* 📝 docs: fix registering documentation

* 📝 docs: fix docs for figure_resampler dir

* 📝 docs: fix aggregation documentation

* 📝 docs: add versioning to documentation

* 🔥 chore: remove old documentation

* 👷 build: add mkdocs CI/CD step

* 🔧 build: add QOL docs extensions

* 📝 docs: add buttons for github, PyPi and DOI

* ➖ chore: remove old sphinx dependencies

* 🎨 chore: format code documentation

* ✏️ chore: remove random text in docstring

* 🎨 chore: format code

* 👷 build: replace tag push with PR push

* 👷 build: fix mike deployment