`eslint-plugin-tsdoc`: Rule to mark types referenced through `{@link}` and `{@inheritDoc}` as used

When writing tsdoc strings, it's powerful to be able to reference types from an inline link tag.
It would however be great if the eslint plugin would mark these as used and avoid the @typescript-eslint/no-unused-vars rule reporting types that are only referenced from tsdoc comments as unused.

As an example, the following code

class MyClass {}
/** This comment reference {@link MyClass} but it's still "never used" */
const foo = null;

yields

  1:7  warning  'MyClass' is defined but never used       @typescript-eslint/no-unused-vars
  3:7  warning  'foo' is assigned a value but never used  @typescript-eslint/no-unused-vars

and I would love for that first line to go away.

This is already supported for plain (non inline tags) by the jsdoc plugin, through the use of the eslint SourceCode#markVariableAsUsed API, but it doesn't yet support inline tags and it would be great to have this supported in the eslint-plugin-tsdoc directly.

I'd be interested in submitting a PR for this, if this is interesting for the maintainers.

Start in eslint-plugin-tsdoc's handling of inline {@link} and {@inheritDoc} tags, using the referenced SourceCode#markVariableAsUsed API as the integration point. Done means types referenced only through those tags no longer trigger @typescript-eslint/no-unused-vars, while unrelated unused variables such as foo still do.