Add development build with extra safety net

[DavidPeicho]

Had a great discussion with @rafern about how to check for invalid resource identifiers, such as object ids, texture ids etc... We should definitely provide a development build with some safety such as:

get objectId() {
    if (WL_DEV_BUILD) {
        if (this._objectId === -1) {
            throw new Error('Accessing invalid object');
        }
    }
    returns this._objectId;
}

It's really easy to do. However, we need to find solutions for:

• Preventing people to deploy the development build. The editor might play a role in there
• Still allow people without transformer to get this code running.