⚡ Bolt: [performance improvement] optimize serde deserialization

[cloudesize67-cmd]

💡 What:
Replaced calls to serde_yaml::from_value::<T>(value.clone()) and serde_json::from_value::<T>(value.clone()) with T::deserialize(value) across component parsing blocks in xdk-openapi/src/parser.rs. Added the necessary use serde::Deserialize; import.

🎯 Why:
Parsing OpenAPI specs in two passes required cloning intermediate AST Value nodes into strongly typed models (like schemas, parameters, etc.). Cloning Serde values deeply allocates and copies heap strings, leading to excessive memory allocation and GC overhead for large OpenAPI schemas. By using Deserialize directly on the &Value reference, Serde borrows the underlying string data safely, eliminating the massive cloning cost.

📊 Impact:
Significantly reduces memory allocations and heap copying during the spec parsing phase, leading to faster startup times and lower peak memory consumption for the generator, particularly when processing large, deeply nested OpenAPI specifications.

🔬 Measurement:

1. Run make check to verify formatting and linting rules are met.
2. Run make test-generator and cargo test to verify parsing still works accurately and no regressions are introduced.

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PR created automatically by Jules for task 9660156277547468027 started by @cloudesize67-cmd

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