Create POC of DidExchange protocol for Android

[fedyiv]

Summary:
The goal is to prove that library can be run on Android and perform connection initiation with remote agent

TO DO:

1. Take **develop branch of current repository.
2. Run .NET Aries agent with websockets locally
3. Ensure you can run current SsiAgentApiImplTest on JVM and establish connection with remote agent
4. Review https://kotlinlang.org/docs/multiplatform.html to get a concept of kotlin multiplatform
5. Implement all missing parts in androidMain part of the repo. Mostly you can use copy-paste form jvmMain
6. Understand how libindy is packed into current DXC SSI library (in master branch) and pack it similarly in new branch
7. Ensure test SsiAgentApiImplTest passes on Android Emulator
8. Add into readme informationon how to build it for android, how to run tests and how to use this library on client side

Definition of Done:

1. SsiAgentApiImplTest is passing on Android Emulator