[Images] Sourcing kit (#6244)

* created sourcing kit folder
changed page weights

* created pages and content

* added tag beta to title

* refined amazon credentials text

* refined edit page

* refined enable page

* refined text

* refined text enabling sk

* refined text edit sk

* refined text enable sk

* added import jobs page

* changed credentials file name
refined text
deleted import jobs

* added beta note and links

* refined text

* corrected link

* Apply suggestions from code review

Co-authored-by: Pedro Sousa <680496+pedrosousa@users.noreply.github.com>

* Update content/images/cloudflare-images/sourcing-kit/enable-sourcing-kit.md

Co-authored-by: Pedro Sousa <680496+pedrosousa@users.noreply.github.com>

* corrected api file name
changed file names edit enable
corrected links and text

Co-authored-by: Pedro Sousa <680496+pedrosousa@users.noreply.github.com>