feat(util): Allow conversion from StringBuf to string_view

[bnbajwa]

SDB-9266

[gemini-code-assist]

Summary of Changes

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This pull request introduces a new conversion capability for the StringBuf utility class. By enabling explicit conversion to std::string_view, it facilitates more efficient and flexible string manipulation within the codebase, aligning StringBuf with contemporary C++ practices for non-owning string references.

Highlights

• StringBuf to std::string_view Conversion: An explicit conversion operator has been added to the StringBuf class, allowing it to be directly converted to std::string_view. This enhances interoperability with modern C++ string handling.

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[gemini-code-assist]

Code Review

This pull request introduces an explicit conversion operator to std::string_view for the StringBuf class. The implementation is sound and correctly marked as explicit and noexcept. My feedback includes one suggestion to enhance it by making the operator constexpr, which would align it with other constexpr members of the class and improve its utility in compile-time contexts.