Add declare module to typings

[hansottowirtz]

Typescript shows this error when importing:

File '<project>/node_modules/construct-style-sheets-polyfill/dist/adoptedStyleSheets.d.ts' is not a module.

This PR fixes that error.

As a workaround, you can use:

construct-style-sheets-polyfill.d.ts

declare module 'construct-style-sheets-polyfill';

[calebdwilliams]

Thanks! Can you update the commit to use standard format, fix: add declare module to typings

[calebdwilliams]

Just need to update commit message so the version increments correctly.

[calebdwilliams]

Perfect. Thanks for the contribution.

[calebdwilliams]

This was released as part of version 2.4.9. Thanks @hansottowirtz!