**As an** OpenProject user
**I want to** manage projects through the API v3
**so that** I can integrate OpenProject with other systems.

**Acceptance criteria** Begin of the insertion

* End of the insertion Begin of the deletion

-End of the deletion Create Begin of the insertion
* ~~Read~~End of the insertion Begin of the deletion
- <s>Read</s>End of the deletion (GET /project/:id and GET /projects exists) Begin of the insertion
* End of the insertion Begin of the deletion
-End of the deletion Update Begin of the insertion
* End of the insertion Begin of the deletion
-End of the deletion Delete

**Out of scope** Begin of the insertion

* End of the insertion Begin of the deletion

-End of the deletion Custom fields on projects Begin of the insertion(Done in #30387)
* End of the insertion Begin of the deletion
-End of the deletion Copy Begin of the insertion
* End of the insertion Begin of the deletion
-End of the deletion Memberships Begin of the insertion(Implemented in OP 9.0)End of the insertion