Ability to change full name for the service desk user

Problem to solve

Emails send from GitLab.com when using the servicedesk are send with an email name GitLab Support Bot. Often times, the originator of the issue has no idea they are emailing the GitLab service desk - therefore receiving a response from this name is confusing.

Further details

• Within the project Settings --> General --> Service Desk
• Add an new option, Email from name
• When left blank use the GitLab Support Bot as is, otherwise use the name set in this field when sending mails

Proposal

From #37443 (closed)

Override the name of the existing Support Bot when emailing the client, however GitLab Support Bot will still author the issues/comments.

1. Add a column to service_desk_settings to hold the name of the bot
2. Update Projects::ServiceDeskController to accept and set bot name
3. Use the name when sending email responses to clients
4. Default to GitLab Support bot
5. Allow the user to set the name in Service Desk settings

What does success look like, and how can we measure that?

n/a

Links / references

n/a