Enhance git access management

[klelostec]

Actually, drupguard git client delegate security to git system command.

We need to enhance this to allow security management at drupguard project level (maybe with app token or ssh keys, passwords ...).

[obriat]

1. Create a new project
2. Enter repo url (moved to first field)
3. Display a (new) select box of repo types (gitlab, github, ...) with the detected one preselected (to store in db)
4. Display info about how to generate a token according to the selected repo type (updated on manual change)

• https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/creating-a-personal-access-token
• https://docs.gitlab.com/ee/user/project/settings/project_access_tokens.html

5. Add a new field for token (to store in db)

Update code so it could use token, remove old code