Crypto refactoring

[andreypfau]

No description provided.

[Copilot]

Pull Request Overview

This PR performs a comprehensive crypto refactoring by migrating from third-party crypto libraries to an internal org.ton.kotlin.crypto package. The changes consolidate cryptographic operations into a centralized crypto module and update all affected code to use the new interfaces.

Key changes:

• Migration from third-party crypto dependencies to internal org.ton.kotlin.crypto package
• Replacement of specific key types (PrivateKey, PublicKey) with generic crypto interfaces (Signer, SignatureVerifier)
• Update of package names from org.ton.tl to org.ton.kotlin.tl throughout the TL serialization layer

Reviewed Changes

Copilot reviewed 298 out of 350 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
Multiple DhtValue*.kt files	Updated crypto imports and replaced PrivateKey/PublicKey with Signer/SignatureVerifier
Multiple TL files	Changed package from org.ton.tl to org.ton.kotlin.tl
Multiple LiteServer function files	Updated TL package imports
build.gradle.kts files	Updated Kotlin version and added source directory configurations
Various other files	Updated crypto and TL package imports

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