Improvements to Bluetooth connectivity

[makermelissa]

This is to address #183. This improve Bluetooth workflow in several ways:

• Error messages are now displayed as a popup rather than in the console, so the user is aware that there is a problem.
• When a problem with connecting happens, a solution of removing the device from the OS is now displayed, which works consistently
• The workflow is a bit rearranged so that there are fewer problems connecting
• A new more specific flag (about://flags/#enable-web-bluetooth-new-permissions-backend) is recommended over the more general (about://flags/#enable-experimental-web-platform-features) flag.
• https enabled in vite because web bluetooth is supposed to require that (it wasn't before due to the more general flag, which I believe was part of the issue we were having with Bluetooth.

[tannewt]

Thank you!