Alow updating API response before serialization

[AndreyTretyak]

Fixes #308 by allowing customers to exclude deprecated filed before JSON.stringify triggers warnings.
For example:

const removeDepricatedFieldsFromObject = function (obj) {
    if ('place_id' in obj) {
        delete obj.utc_offset
    }
    if ('opening_hours' in obj) {
        const hours = obj.opening_hours
        delete hours.open_now
    }
}

const removeDepricatedFields = function (obj) {
    if (Array.isArray(obj)) {
        for (const element of obj) {
            removeDepricatedFields(element)
        }
    } if (typeof obj === 'object' && obj !== null) {
        removeDepricatedFieldsFromObject(obj)
    }
}

window.blazorGoogleMapsBeforeStringify = function (obj) {
   removeDepricatedFields(obj);
   return obj;
};

[valentasm1]

Take a look till sunday

[AndreyTretyak]

Take a look till sunday

Feel free to look at it when you are back from workation. I'm fine with this being delayed till 18th, as long as it's not delayed indefinitely.

[valentasm1]

Really nice implementation. Thank you.
Released.

[AndreyTretyak]

Thank you for acting on it so quickly.