Need to make project name can be a domain name include dot

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Is your feature request related to a problem? Please describe the problem.

Today. Aspire project name don't support "." inside the project name.
in our micro service, we use domain name to resolve to each micro service, for example, we use aaa.io for a, and bbb.io for b as baseaddress.
to board into aspire, we don't want to change existing code and still want to use the full domain name. the stuff i want is. set the project to the target domain name, this will make if i run at local, the client still use bbb.io to access it, and the service discover then translate it into localhost. when run at azure, the micro service will just keep orginal logical to access the service.

now the blocker seem the rule of project name. which use as the keyword to service discovery. what i need is i can set name to bbb.io. and then when service discovery realize it, it just go ahead to resolve it well.

### Describe the solution you'd like

make the project name can contain dot

### Additional context

_No response_