Add ability to hide specific dashboards

[aleisalem]

Is your feature request related to a problem? Please describe.
There is currently no way (I know of) to hide some of the dashboards displayed on the web interface. I want to be able to focus on (a) the AWS services we are using, and (b) just a couple of insights that the "Dashboard" and "Detail" dashboards of each service would give us.

Describe the solution you'd like

• Either via the powerpipe command or in some config file (say mod.pp), it would be great to specify the dashboards to show or hide (preferable explicit hiding).
• From the GUI would also be OK, maybe via profiles (i.e., profile "default" shows all dashboards, while profile "only_s3" shows only S3-related dashboards).

Describe alternatives you've considered

• I tried a quick-and-dirty hack of removing the directories of some of the dashboards I am not interested in seeing, but that broke the process when running powerpipe server, because some dashboards depend on others. Decoupling them might prove to be either cumbersome, not possible, or both.
• I also tried looking into hiding dashboards via the powerpipe dashboard show commands, but it does not seem to be allowing this capability.

Additional context
Apologies if this feature somehow exists but I could not really find that anywhere.

Cheers,
Alei