* api: Add an endpoint to list a particular member of team.

* models: Rename `GetUserTeams()` to `GetUserOrgTeams()` in `org_team` model.

`GetUserTeams()` sounds a bit misnomer since it actually returns
the teams that user belongs to in a given organization rather than
all the teams across all the organization that the user has joined.

* models: Add `GetUserTeams()`.

Returns all the teams that a user belongs to.

* api: Add an endpoint for GET '/user/teams'.

A GET request to this endpoint lists all the teams that a user
belongs to.

* Add branch protection for approvals

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add required approvals

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add missing comments and fmt

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add type = approval and group by reviewer_id to review

* Prevent users from adding negative review limits

* Add migration for approval whitelists

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* fix units permission problems

* fix some bugs and merge LoadUnits to repoAssignment

* refactor permission struct and add some copyright heads

* remove unused codes

* fix routes units check

* improve permission check

* add unit tests for permission

* fix typo

* fix tests

* fix some routes

* fix api permission check

* improve permission check

* fix some permission check

* fix tests

* fix tests

* improve some permission check

* fix some permission check

* refactor AccessLevel

* fix bug

* fix tests

* fix tests

* fix tests

* fix AccessLevel

* rename CanAccess

* fix tests

* fix comment

* fix bug

* add missing unit for test repos

* fix bug

* rename some functions

* fix routes check