docs: general correction across all the pages

docs: fix image in the `interactive shell` page

docs: updating `extract commans` page

docs: updating `Interactive shell` page and some corrections

docs: update the cli section

docs: Style updates and a lot of clarifications

docs: Update all pages/docstrings to reflect recent changes

docs: add cli overview page

docs: add the page for the `extract` command

docs: replace the test website

docs: Add a page about the interactive shell