Add ability to set init store to MVVM

[maspasov]

Added

MVVM now has a prop for the init store. We can define global store and observe into every component for some changes in that store.
I fixed an error in the Identity provider in case of no valid response from that API.

Changed

• MVVM Provider
• Identity Provider

Fixed

Example how we can set init store from some App:

[einari]

A couple of things:

1. Could you fix the description to be more like we have for all of our releases. The pictures don't really explain what has been changed / added / fixed in the release. For inspiration, have a look here.
2. Please set the correct labels for what type of semantic version change this represents.
   
3. Could you explain what this change does? Since we already have the Mobx options on the MVVMProps and initStoreis not a concept in application model itself, I'm struggling to see if the introduction of this property will affect anything?

[maspasov]

A couple of things:

1. Could you fix the description to be more like we have for all of our releases. The pictures don't really explain what has been changed / added / fixed in the release. For inspiration, have a look here.
2. Please set the correct labels for what type of semantic version change this represents.
   
3. Could you explain what this change does? Since we already have the Mobx options on the MVVMProps and initStoreis not a concept in application model itself, I'm struggling to see if the introduction of this property will affect anything?

I have added initStore prop because it will be used for MVVM provider, mobx prop is a specific property for configuring Mobx library. There is a perfect example of what we can do with the store provider which is MVVM in our case. https://youtu.be/pnhIJA64ByY?t=261

[maspasov]

We decided not to add a store to the MVVM provider. So for now I will close that PR and add fix regarding IdentityProvider as a separate PR.