Add FlowModel attribute and relationship

[JustWalters]

https://envoycom.atlassian.net/browse/PLUG-3553

The version was bumped in c19bf01, not on this branch.

[Copilot]

Pull Request Overview

This PR adds a new Sign In Field Manager API and updates resource definitions to facilitate sign in field management in Envoy visitor flows. Key changes include:

• Adding the SignInFieldManager class with methods for adding, deleting, updating, and retrieving sign in fields.
• Defining creation models and new type restrictions for sign in fields.
• Updating the FlowResource and index module to include new properties and exports supporting the sign in field functionality.

Reviewed Changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 2 comments.

File	Description
src/sdk/EnvoySignInFieldManager.ts	Introduces SignInFieldManager class and associated API call methods
src/resources/SignInFieldResource.ts	Adds new type definitions for sign in field creation attributes
src/resources/FlowResource.ts	Adds a new property to FlowAttributes to support type information
src/index.ts	Adds and re-exports JSONAPIResponse to support new functionality

Files not reviewed (1)

• package.json: Language not supported

[Copilot]

Pull Request Overview

This PR introduces functionality for managing sign-in fields in Envoy, including creation, update, deletion, and synchronization across flows. It also adds a polyfill for Promise.allSettled and updates several API resource types to support global flows.

• Added a new promiseAllSettled utility.
• Implemented EnvoySignInFieldManager and EnvoySignInFieldFlowManager for sign-in field operations.
• Updated resource definitions and imports to support the new field management features.

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/util/promiseAllSettled.ts	Added polyfill implementation with fallback for Promise.allSettled.
src/sdk/EnvoySignInFieldManager.ts	Introduced sign-in field manager functions with delete and update endpoints.
src/sdk/EnvoySignInFieldFlowManager.ts	Implemented flow synchronization and error handling for sign-in fields.
src/resources/SignInFieldResource.ts	Added strict types for sign-in field creation attributes.
src/resources/FlowResource.ts	Updated Flow resource to include a new "type" attribute and global-flow relationship.
src/index.ts	Exported the updated JSONAPIResponse along with other SDK components.
package.json	Bumped the version to reflect new functionality.

Comments suppressed due to low confidence (1)

src/sdk/EnvoySignInFieldFlowManager.ts:173

• [nitpick] The variable name 'cardNumberField' might be misleading if the default field is not specifically a card number. Consider renaming it to something more generic like 'defaultField' to better reflect its purpose.

          const cardNumberField = fields.find((field) => field.attributes.name === this.defaultFieldConfig.name);

[ryanflynndev]

Can you bump the version?

[JustWalters]

Can you bump the version?

I accidentally did it on master. We could just merge this PR and then create the release. But if you prefer, I'll revert it on master.