add support for typescript "go to source definition"

[christophsturm]

Description

typescript now has a great new feature , go to source definition, but it does not yet work in svelte files in visual studio code.
see here:

microsoft/TypeScript#49003
and
microsoft/TypeScript#49003 (comment)

Proposed solution

it would be great if this could be added to the svelte vscode plugin. If someone could point me to a good starting point i could try to implement it.

Alternatives

No response

Additional Information, eg. Screenshots

No response

[jasonlyu123]

I don't think this is suitable for a first-time contributor. Yes. There is an API for it, but we're using a lower-level API, so we can't access that API. We have to copy a lot of the logic from TypeScript to make it happen. For that reason, This won't happen any time soon.