add captureException() wrapper

[shouples]

Summary of Changes

Adds a wrapper around our Sentry.captureException() calls to automatically include the ObservabilityContext as part of the event extra, and also include convenience ResponseContext status if the passed error is one of our supported ResponseError types. This will also include the associated x-connection-id header so we can see if the captured response error came from a CCloud or local connection (and eventually UUIDs for direct connections).

Pull request checklist

Please check if your PR fulfills the following (if applicable):

Tests

• Added new
• Updated existing
• Deleted existing

Other

• All new disposables (event listeners, views, channels, etc.) collected as for eventual cleanup?

• Does anything in this PR need to be mentioned in the user-facing CHANGELOG or README?
• Have you validated this change locally by packaging and installing the extension .vsix file?

  gulp clicktest

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