Add React shims to hide useRef to make Web Components built with Svelte easier to use

[MantisClone]

Follow-up to #34

Problem

Svelte's Object parser always calls JSON.stringify and JSON.parse which doesn't work for complex objects that have Functions.

Proposed Solution

Create React Shims that handle the useRef to simplify the Dev EX for integrating the components.

• payment-widget
• invoice-dashboard
• create-request-form

Alternatives

• Reimplement Web Components using https://lit.dev/ which may or may not have the same Object parsing limitation as Web Components written in Svelte.

[aimensahnoun]

This was achieved in https://github.com/RequestNetwork/web-components/tree/main/packages/payment-widget/src/lib/react.

[MantisClone]

Re-open so we can apply the same fixes to the invoice-dashbaord and create-request-form