Add possibility to create token when creating a user on command line

[morpheus-87]

• Gitea version (or commit ref): 1.7.4
• Git version: 2.11.0
• Operating system: Raspbian
• Database (use [x]):
  • PostgreSQL
  • MySQL
  • MSSQL
  • SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • Yes (provide example URL)
  • No
  • Not relevant
• Log gist:

Description

It would be great to add a flag to the create-user command line option, if an access token should be generated for the new user.

Screenshots