Feature: Exception Decoding

[alexyao2015]

Now that the dashboard has the ability to directly obtain serial logs, it would be awesome if it could also decode exceptions dumped to the logs.

This could be game changing to allow anyone to easily decode stack traces if they occur in their logs.

I can think of two methods this could be done:

1. Recreate this exception decoder in TS/JS and obtain the elf file from the ESPHome server to directly decode it.
2. Detect when an exception is dumped and pass it back to the esphome webserver for decoding.