Changes to Push a skill

added the new optional header request parameter X-Toolhive-Key-Signing-Capability

added the non-success response with the status 403

added the new optional request property oneOf[#/components/schemas/pkg_api_v1.pushSkillRequest]/identity_token

added the new optional request property oneOf[#/components/schemas/pkg_api_v1.pushSkillRequest]/key

added the new optional request property oneOf[#/components/schemas/pkg_api_v1.pushSkillRequest]/no_sign

removed v1.pushSkillRequest from the request body oneOf list

added pkg_api_v1.pushSkillRequest to the request body oneOf list

added the non-success response with the status 400

added the non-success response with the status 404

added the non-success response with the status 500

removed the non-success response with the status 501

endpoint added

api path removed without deprecation