Introduce license definition for project schema

[arkid15r]

Describe the solution you'd like
Add a license definition similar to leader project for project schema:

• consider adding at least the following fields:
  • name - required
  • id (spdx_id) - required -- this should be an enum of the available options -- the list of all licenses used by OWASP projects (bonus points for gathering the list by yourself from Nest DB)
• extend schema w/ optional license field
• add/extend tests for the new attribute

[yashgoyal0110]

I would like to work on it

[abhayymishraa]

Hey @arkid15r i maded the pr from this account as i got it back !!!! So you can unassign my other account