[MINOR] Include a variable for including additional link typoes

[pprevos]

Have you checked whether this feature is not already on the project board?

Yes

Is your feature request related to a problem? Please describe. Many people are migrating from Org Roam to Denote, but are dearly missing the graphing capabilities. A minor change would also include Denote links in the UI.

Describe the solution you'd like Add a variable to include additional link types to the graph in the org-roam-ui--get-links function.

Describe alternatives you've considered As a workaround I added the condition (= links:type "denote") to graph Denote links. This could be a variable to include other Org link types.

Additional context NA