[BUG] pikaraoke headed mode throws errors on launch over SSH

[vicwomg]

Describe the bug
Trying to launch pikaraoke headed mode over SSH results in a cryptic error

The solution is described here in the wiki
https://github.com/vicwomg/pikaraoke/wiki/FAQ-&-Troubleshooting#im-getting-this-chromedriver-error-on-launch-session-not-created-devtoolsactiveport-file-doesnt-exist

But it is still biting a lot of users and causing confusion.

To Reproduce
Steps to reproduce the behavior:

1. SSH to a pi
2. Run pikaraoke
3. Error on launch: session not created: DevToolsActivePort file doesn't exist

Expected behavior
Catch this error and detect if the user is running over SSH. If so, we should output more meaningful error text and suggest prepending with DISPLAY=:0.0

Platform (please complete the following information):

• Hardware: N/A