* start splitting up

* remove preludes

* add titles

* Apply suggestions from code review
Co-authored-by: Phil Pluckthun <phil@kitten.sh>

* Move concepts/core-package.md to basics/node.md and rename

* Move "Document Caching" and "Errors" to "Concepts"

* Update Overview page

* (docs) - Redirects (#1318)

* try out redirects

* Update static.config.js

* Update static.config.js

* Update static.config.js

* Add outro sections to each "Basics" page

* Update redirects

* Update internal links and references

- To React/Preact/Vue/Svelte pages
- To Request Policies (content moved to Document Caching)
- To Document Caching
- To Errors
Co-authored-by: Phil Pluckthun <phil@kitten.sh>