Refactor XML Parser & XML Generation

[yinjie-z]

💡 Issue Reference

Issue: #214

💻 What does this address?

This PR focuses on modernizing the XML Generation and Parser logic. The primary goals were to replace brittle conditional logic with efficient lookups and to standardize string handling across the codebase.

📟 Implementation Details

Logic Modernization: Refactored XMLGenerator to use std::unordered_map for administrative type and operation mappings, replacing long if/else chains. This improves maintainability and lookup performance.

Standardized String Handling: Updated both xml_generator.cpp and xml_parser.cpp to consistently use std::string. This eliminates manual memory management and improves safety during conversions.

Function Cleanup: Streamlined the core functions in XMLGenerator to be more modular and readable. Specifically:

• Simplified the segment creation logic to automatically handle interleaved JSON keys.
• Cleaned up the trait-to-XML mapping to reduce code duplication.

Added a checkout step to the Labeler workflow to prevent The configuration file (path: .github/labeler.yml) was not found locally, fetching via the api in job log.

[yinjie-z]

Before : Summary link

Benchmark	Avg Time (ms)	Memory Growth (KB)
Validation_Syntax_Error	0.0199	612.0000
IRRSMO_Generate_Add_User	0.9884	440.0000
IRRSMO00_Parse_Add_User_Result	0.9935	128.0000
IRRSEQ00_Generate_Extract_User	0.4413	172.0000
IRRSDL00_Generate_Extract_Keyring	0.5284	0.0000

After : Summary link

Benchmark	Avg Time (ms)	Memory Growth (KB)
Validation_Syntax_Error	0.0229	636.0000
IRRSMO00_Generate_Add_User	1.0587	728.0000
IRRSMO00_Parse_Add_User_Result	1.0615	0.0000
IRRSEQ00_Generate_Extract_User	0.5832	0.0000
IRRSDL00_Generate_Extract_Keyring	0.6959	0.0000

[EmmasBox]

lgtm