feat: Generate Link

[Lacah]

Create a new Flow Designer action called “Generate Link”, which generates a direct URL to a given record in ServiceNow.
The action should accept a record reference (table + sys_id) and an interface type (Core UI, Workspace, or Portal) to produce the appropriate link format.

This feature allows developers and process owners to dynamically build shareable links inside flows—for example, sending record links in email notifications, chat messages, or task updates.

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Example

Inputs:

• table (String, required) — The name of the table where the record resides (e.g. incident, hr_case).
• sys_id (String, required) — The sys_id of the record to link to.
• ui_type (Choice, optional) — The desired interface for the link:
  • core → Standard UI (default)
  • workspace → Target Workspace experience
  • portal → Default Service Portal view

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Behavior:
Based on the selected ui_type, the action constructs the appropriate URL.
Examples:

UI Type	Example URL
Core UI	https://<instance>.service-now.com/incident.do?sys_id=abcd1234
Workspace	https://<instance>.service-now.com/now/workspace/agent/record/incident/abcd1234
Portal	https://<instance>.service-now.com/sp?id=form&table=incident&sys_id=abcd1234

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[Lacah]

Apparently this came late, PR #70 already addressed this, so closing.