Apply PR #7: Parse #define constants and fix array type bindings (with code standards improvements)

[Copilot]

PR #7 introduced parsing of #define entries from the Khronos registry and fixed struct members whose array sizes are defined by symbolic constants (e.g., XrUuid.data, XrApiLayerCreateInfo.settings_file_location). This applies those changes with modularity and maintainability improvements.

Generator fixes

• StructureDefinition.cs — Regex now uses Regex.Escape() on member name, named capture groups, match.Success instead of match.Captures.Count > 0, and correctly sets m.ConstantValue when the array bound is a symbolic name rather than a literal integer
• OpenXRSpecification.cs — Added Defines dictionary populated by parsing <type category="define"> entries via regex; used downstream to resolve array sizes
• Program.cs — Replaced duplicated constant-resolution branches with a single TryResolveArrayCount helper that searches API Constants → enum values → #define entries in order; added null-safety + InvalidOperationException with context when resolution fails

private static bool TryResolveArrayCount(
    string constantName, OpenXRVersion openXRVersion, OpenXRSpecification openXRSpec, out int count)
{
    // API Constants → enum values → #define entries
    ...
}

• Helpers.cs — Moved TryParseDefineIntValue here (was inlined in Program); handles decimal, hex (0x), sign, and numeric suffixes; rejects compound expressions including subtraction
• ConstantDefinition.cs — Fixed NormalizeValue return type from object to string

Generated output (Structs.cs)

Three struct members corrected by the above fixes:

Struct	Member	Before	After
XrUuid	data	byte data	fixed byte data[(int)OpenXRNative.XR_UUID_SIZE]
XrApiLayerCreateInfo	settings_file_location	byte settings_file_location	fixed byte settings_file_location[512]
XrEyeGazesFB	gaze	XrEyeGazeFB gaze	XrEyeGazeFB gaze_0; XrEyeGazeFB gaze_1

Original prompt

Review code changes in PR #7 to ensure compliance with coding standards and identify opportunities for optimization or improvement. Specifically prioritize modularity, readability, and maintainability.

The following is the prior conversation context from the user's chat exploration (may be truncated):

User: Could you check if the code in this PR could be improved?

Assistant: I've initiated an analysis of the code in PR #7 to identify potential improvements. I'll update you once a review is complete.

This pull request was created from Copilot chat.

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