Integrate Sentry into `dstack-gateway`

[jvstme]

Sentry will help monitor dstack-gateway for errors and performance issues in dstack Sky.
OSS and Enterprise users may also opt in to using Sentry for their gateways.

[github-actions]

This issue is stale because it has been open for 30 days with no activity.

[peterschmidt85]

I guess this won't be needed if we implement #1673, correct @jvstme?

[jvstme]

@peterschmidt85, #1673 will provide easier access to gateway logs but we still won't know about errors unless we monitor the logs manually. So I think Sentry will still be useful for constant monitoring and alerting.

[peterschmidt85]

Yes, you are right

[github-actions]

This issue is stale because it has been open for 30 days with no activity.

[github-actions]

This issue is stale because it has been open for 30 days with no activity.