Add error page

[stdavis]

Closes #72

This PR adds an error boundary component at the root of the application to catch any errors that aren't caught elsewhere in the application. Note: this will not catch errors in async code or event handlers.

You can test it by introducing some sort of code that will throw an uncaught exception on any page. Here's how I tested it in src/pages/Data.jsx:

This is what the error page looks like:

"RESTART APPLICATION" exits and restarts the application automatically to hopefully get it back into a state that is workable.

"REPORT THIS ISSUE" opens the user's browser to the new issue page for this repo with a bunch of stuff automatically populated. Here's an example of an issue that I created with this button without entering anything manually into the description.

We probably want to set up some sort of crash reporting as well. Sentry would be my first choice since I'm already using it for the roadkill and fleet mobile apps. However, I didn't want to make this decision without @steveoh's blessing.

[steveoh]

You have my blessing for sentry 😁

[stdavis]

I've gone down a huge rabbit hole trying to implement Sentry. It would be good for both of us to take a look at it together. I've push a wip commit of where I got to. My main issue is trying to call init from the preload script. I've read that it need to be called in main, renderer, and preload. I feel like I'm one webpack config from getting it working.

I did run node sentry-symbols.js to upload the electron symbols.

Some helpful links:

https://docs.sentry.io/platforms/javascript/guides/electron/

getsentry/sentry-electron#366

This comment makes me think that we should just wait until v3 final of @sentry/electron is released.