chore: remove algokit_utils and algokit_utils_ffi crates

[lempira]

Closes #296

[Copilot]

Pull request overview

This PR removes the algokit_utils and algokit_utils_ffi crates as part of issue #296. The changes involve deleting all test files and source code directories associated with these crates.

Key changes:

• Removal of all test files for KMD, indexer, algod, clients, and applications functionality
• Deletion of common test utilities including fixtures, helpers, and test account management
• Removal of transaction-related source code including payment, asset operations, and key registration
• Deletion of the main library module and application-related code

Reviewed changes

Copilot reviewed 83 out of 134 changed files in this pull request and generated no comments.

File	Description
Multiple test files	Removed test infrastructure for KMD, indexer, algod APIs, and application clients
Common test modules	Deleted test fixtures, helpers, account management, and mnemonic utilities
Transaction modules	Removed payment, asset freeze/transfer, key registration transaction implementations
Library source files	Deleted main library module and application client/deployer/factory code

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[joe-p]

There's probably some helpful stuff we eventually want pull from utils, like a utility function for getting default dispenser on localnet, but we can just pull that from the branch if/when needed