[docs] Migrate "Integration review"

[sarjona]

The URL of the page on https://docs.moodle.org/dev/

https://docs.moodle.org/dev/Integration_Review

Is this documentation specific to a Moodle version?

No

What location would you suggest in the new docs?

general/development/process/integration-review.md

[sarjona]

Added MigratedDocs template to https://docs.moodle.org/dev/Integration_Review