feat(transport): add stateful FormatDetector with auto-locking

- Add DetectedFormat enum (Unknown/Json/MessagePack)
- Add FormatMode enum (Auto/ForceJson/ForceMessagePack)
- Add FormatDetector with mismatch tracking and auto-reset
- Enhanced whitespace handling for JSON detection
- 13 new tests for format detection

Migrated from dfe-loader-clickhouse payload/detect.rs

Author: Derek

Cargo.toml

@@ -8,7 +8,7 @@
 
 [package]
 name = "hs-rustlib"
-version = "0.1.0"
+version = "0.2.0"
 edition = "2021"
 rust-version = "1.75"
 description = "Shared utility library for HyperSec Rust applications"