Setup crash reporting and error telemetry

[maninak]

When we have a meaningful count of active users it may be worth getting some production runtime insights to have higher confidence we haven't introduced some big regression with each new release and be quickly notified if so.

Resources:

• https://www.npmjs.com/package/@vscode/extension-telemetry
• https://code.visualstudio.com/docs/getstarted/telemetry