Create Design / Mockup (including user flow) for "Create MCP" Dialog

[In-Ko]

Description
Let's come up with a nice Design / Mockup for the Create MCP Dialog.
The Design should include a user flow.

Please refer to the user-story (parent issue) for more details (which also includes a first screenshot).

Done Criteria

• Design suggestion / mockup for the new Create MCP Dialog available and signed-off by the UI Team
• Successful demonstration in Review

[In-Ko]

This one is done from my point of view.