GoogleClientManager.Initialize() throws null ref whatever I do on IOS #66

Describe the bug
in AppDeletgate, I have read everything on internet and tried fixing all the things mentioned everywhere, but GoogleClientManager.Initialize() throws null ref. I am building on device and the same app works on android. I have the googleservice-info.plist as bundle resource. If I try to load the plist in the appdelegate itself, it works and I can load it with the name as you are doing.
I have a valid wildcard provision profile and I use it to deploy the code on my device.
Is it possible to get some logging in the library with Debug.WriteLine() ?

To Reproduce
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4. See error

Expected behavior
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Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
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