Apply noexcept specifiers to core non-throwing utilities and helper functions

[Copilot]

The objective is to annotate all possible non-throwing functions and methods in the codebase with noexcept to enable compiler optimizations and guarantee exception-free behavior.

This change comprehensively annotates core utilities, query parsers, and chunked encoding iterators and helpers.

Utilities and Parsing

• src/Utilities.h: Added noexcept to inline helper functions u32toaHex and u64toa.
• src/QueryParser.h: Added noexcept to getDecodedQueryValue.
• src/BloomFilter.h: Added noexcept to perfectHash, getFeatures, mightHave, add, and reset methods.

Chunked Encoding

• src/ChunkedEncoding.h: Annotated chunked encoding state validation, parsing predicates, and the chunk extraction function (getNextChunk) with noexcept.
• ChunkIterator: Annotated all iterator interface functions, constructors, increment operators, and comparison operators in ChunkIterator with noexcept.

Example

// Before
inline int u32toaHex(uint32_t value, char *dst) { ... }

// After
inline int u32toaHex(uint32_t value, char *dst) noexcept { ... }