[wg/webmachinelearning] Adds WebMCP in scope

[plehegar]

This proposes to work on WebMCP within the scope of the Web Machine Learning Working Group, as a tentative deliverable.

To be discussed at the next WebML WG.

cc @anssiko

[mwyrzykowski]

Apple has some concerns about bringing WebMCP into the Web Machine Learning Group as expressed in WebKit/standards-positions#670 (comment)

[plehegar]

Mentioned on June 18 WebML call

[marcoscaceres]

Just recording that Apple is opposed to this going working group. Expect a formal objection if this is merged. We'd be open to discussing a different venue at the W3C and doing this properly from first principles (i.e., some new agentic web CG/WG). Please see our webkit position on the matter: WebKit/standards-positions#670 (comment)