UserReport: also route to Sentry

## Why
Better search, viewing, alert.

## Flaws
The sentry version should not be considered the primary one since:
- ad-blockers block the packet
- sentry's own throttling will sometimes drop successive entries, even if they are distinct.

## Aside
Sentry has a formal crash report widget and different dashboard. But that takes a bit of effort and testing to set up, so just use the existing mechanism for now.

https://docs.sentry.io/platforms/javascript/enriching-events/user-feedback/?original_referrer=https%3A%2F%2Fdocs.sentry.io%2Fproduct%2Fuser-feedback%2F#embeddable-javascript-widget

ui/page/report/view.jsx

@@ -1,3 +1,4 @@
+import analytics from 'analytics';
 import { doToast } from 'redux/actions/notifications';
 import { FormField } from 'component/common/form';
 import { Lbryio } from 'lbryinc';
@@ -33,6 +34,12 @@ class ReportPage extends React.Component {
       window.app.store.dispatch(action);
     });
 
+    analytics.log('User Feedback', {
+      level: 'info',
+      fingerprint: ['/$/report'],
+      extra: { feedback: message },
+    });
+
     this.setState({ message: '' });
   }