feat(sdk): implement IBC SDK for all 12 languages
Implement Inter-Blockchain Communication (IBC) SDK with full ICS
protocol support across all 12 programming languages:
- JavaScript/TypeScript, Python, Go, Rust
- Java, Kotlin, Swift, Flutter/Dart
- C, C++, C#/.NET, Ruby
Features:
- Light client management (Tendermint, Solo Machine, WASM)
- Connection handshake (4-way: Init, Try, Ack, Confirm)
- Channel management with ordered/unordered support
- ICS-20 fungible token transfers
- HTLC atomic swaps with hashlock (SHA256) and timelock
- Packet relay with timeout handling
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