feat: updates AvN to v1.1.0 of Polkadot

[thadouk]

• Switches to new polkadot-sdk repository
• Update references
• Updates codebase to new interfaces
• Disables asynchronous backing
• Aligns and simplifies the multiple runtimes support (test and avn)

Related Jira ticket:

• SYS-4151

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• Verify First, Write Last: In Substrate development, it is important that you always ensure preconditions are met and return errors at the beginning. After these checks have completed, then you may begin the function's computation.

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