Some mandatory properties in RegistrationConfig typing should be optional

[Brqqq]

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• I have searched existing issues and this is not a duplicate.

Environment

• Platforms: N/A (Development issue)
• Android version: -
• iOS version: -

Issues and Steps to Reproduce

In a TypeScript RN project, use this code

NotificationHub.registerTemplate({
        connectionString: "",
        hubName: "",
        senderID: "",
        template: "",
        templateName: "",
        tags: []
});

Expected Behavior

Describe what you expected would happen.
The above mentioned code should not trigger a TS error

Actual Behavior

Describe what actually happened. Include screenshots, if applicable.
A TS error is given

Argument of type '{ connectionString: string; hubName: string; senderID: string; template: string; templateName: string; }' is not assignable to parameter of type 'TemplateRegistrationConfig'.
Type '{ connectionString: string; hubName: string; senderID: string; template: string; templateName: string; }' is missing the following properties from type 'TemplateRegistrationConfig': channelName, channelImportance, channelShowBadge, channelEnableLights, channelEnableVibrationts(2345)

Here: https://github.com/CatalystCode/react-native-azurenotificationhub/blob/master/docs/android-installation.md it mentions that all these missing properties are optional. But the typing doesn't declare them as optional.

Link to Code

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