[Geolocation] Provide default implementation for geolocation callback

[markmur]

What changes are you making?

Provides a default implementation for the onGeolocationPermissionsShowPrompt lifecycle method, which checks for both manifest and runtime permissions.

This will simplify the implementation in that consumers will only need to care about requesting runtime permissions and calling super.onGeolocationPermissionsShowPrompt to let the library handle the rest.

override fun onGeolocationPermissionsShowPrompt(origin: String, callback: GeolocationPermissions.Callback) {
    (context as MainActivity).requestGeolocationPermission()
     super.onGeolocationPermissionsShowPrompt(origin, callback)
}

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Before you merge

Important

• I've added tests to support my implementation
• I have read and agree with the Contribution Guidelines.
• I have read and agree with the Code of Conduct.
• I've updated the README.

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Checklist for releasing a new version

• I have bumped the version number in the build.gradle file
• I have added a Changelog entry.
• I have updated the versions in the README.md for both Gradle and Maven.

Tip

See the Contributing documentation for instructions on how to publish a new version of the library.

[kiftio]

I haven't had chance to tophat yet

[kiftio]

Shall we remove this whole override and just use the default impl?

[markmur]

This is required since the MainActivity is responsible for actually requesting the permissions. The default implementation checks if permission has been granted already but can't request permissions on behalf of the app.

If we were to request access on app start, then we wouldn't need to override this method at all. Some apps may do this when buyers log in for example or download and use the app for the first time.

[markmur]

Here's the plan for the React-Native side: Shopify/checkout-sheet-kit-react-native#148