Deeplinking support like keiyoushi

[martian-potato]

Describe why this should be added

In keiyoushi's library, extensions can declare deeplinking support just by declaring this block in build.gradle...

    deeplink {
        host("hostname")
        path("/path/pattern/..*")
    }

Other details

No response

Acknowledgements

• I have searched existing issues both open & closed, and confirm that this is a new unreported issue.
• I have written a short but informative title.
• If this is an issue with the app itself, I should be opening an issue in the app repository.
• I have updated the app to version 0.1.1.
• I have updated the extension to the latest version (as listed on the extensions listing page).
• I will correctly fill out all of the requested information in this form.

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