Add Mutations to create, update, and delete individual Gravity Forms.

[justlevine]

Support should be added for

• createGravityFormsForm ( api )
• deleteGravityFormsForm ( api )
• updateGravityFormsForm ( api )

[justlevine]

🤖 Automated Triage

Classification: type: feature 🦋 · priority: medium
Agent-feasible: Yes — scope is well-bounded (3 mutations mapping directly to documented Gravity Forms API functions) and implementable against existing mutation patterns in the codebase.
Estimated effort: Agent high · Human low

Summary: Requests createGravityFormsForm, updateGravityFormsForm, and deleteGravityFormsForm mutations wrapping the corresponding GF API functions. The API contracts are documented and the plugin already has mutation patterns to follow.

Next steps: Ready for planning loop. Confirm auth/capabilities mapping (who can create/update/delete forms) before implementation.