Add initial sentry setup

Related to #343 but will probably need a few more changes

app/web/src/components/FatalErrorBoundary/FatalErrorBoundary.tsx

@@ -0,0 +1,12 @@
+import { FatalErrorBoundary as FatalErrorBoundaryBase } from '@redwoodjs/web'
+import * as Sentry from '@sentry/browser'
+
+class FatalErrorBoundary extends FatalErrorBoundaryBase {
+  componentDidCatch(error, errorInfo) {
+    Sentry.withScope((scope) => {
+      scope.setExtras(errorInfo)
+      Sentry.captureException(error)
+    })
+  }
+}
+export default FatalErrorBoundary