[feature] Add umd format file in npm package

[way2ex]

What problem does this new feature solve?

Other packages like @walletconnect/sign-client has a umd file to used directly without bundle tool.
@walletconnect/modal has a cdn file but it is in ESM format and can only be used with type=module. I have to add defer to my all script tag.

Describe the solution you'd like

Could the modal package provide a umd file to make it possible to use by cdn ?

[jeanbenoit-richez]

any up on this ?