[PM-4747] List members under each group when doing test sync

Type of change

[X] Bug fix
[ ] New feature development
[ ] Tech debt (refactoring, code cleanup, dependency upgrades, etc)
[ ] Build/deploy pipeline (DevOps)
[ ] Other

Objective

Group members were removed in https://github.com/bitwarden/directory-connector/pull/326. This pull requests adds the feature back in.

Code changes

I ran prettier and lint which resulted in deleting spaces and then replaced the '@' char with '@'.

src/app/tabs/dashboard.component.html: Iterate through the members array and display each member display name
src/models/groupEntry.ts: Add an array for the group's users so it would be accessible on the view

Screenshots

Example:

Testing requirements

Verify that the groups members are displayed correctly when performing a test sync. Check that all copy with the '@' char on the settings tab displays correctly.

Before you submit

[X] I have checked for linting errors (npm run lint) (required)
[ ] I have added unit tests where it makes sense to do so (encouraged but not required)
[ ] This change requires a documentation update (notify the documentation team)
[ ] This change has particular deployment requirements (notify the DevOps team)

bitwarden / directory-connector

[PM-4747] List members under each group when doing test sync #507