⚡ Bolt: [performance improvement] Avoid deep clones in OpenAPI parsing

[cloudesize67-cmd]

💡 What:
Replaced serde_yaml::from_value and serde_json::from_value with T::deserialize in xdk-openapi/src/parser.rs. Instead of cloning the intermediate Value sub-trees with .clone(), it now takes a reference (&value).

🎯 Why:
When extracting individual OpenAPI components (like Schema, Parameter, SecurityScheme), the previous code cloned the entire serde_yaml::Value or serde_json::Value nested AST to satisfy from_value's move requirement. This creates immense memory allocation overhead and slows down parsing of large OpenAPI specs. T::deserialize(&value) effectively skips this without introducing borrow lifetime issues since the destination structures are DeserializeOwned.

📊 Impact:
Reduces peak memory allocation significantly and speeds up parser execution by completely eliminating redundant O(N) AST deep-clones during the first pass context loading.

🔬 Measurement:
Tested via make test-generator to ensure functionality, make check for standards compliance, and verified successful SDK generation. No behavior changes, only faster and lighter component parsing.

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PR created automatically by Jules for task 6318719079981015089 started by @cloudesize67-cmd

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