Update to zig 0.15.1

[Senryoku]

Fixes compilation (on Windows at least) with the just released zig 0.15.1

• Removed use of previously deprecated APIs in build script (addStaticLibrary and root_source_file)
• Removed use of deprecated alias callconv(.C) for callconv(.c)
• Smaller changes:
  • alignedAlloc takes a std.mem.Alignment instead of an arbitrary int
  • std.time.sleep -> std.Thread.sleep
  • std.ArrayList isn't managed by default anymore (deinit takes an allocator)

Only tested on Windows and in a very small program as I'm still in the process of migrating my own projects.
Hope this is still useful!

[Copilot]

Pull Request Overview

This PR updates the zaudio library to be compatible with Zig 0.15.1, addressing compilation issues by replacing deprecated APIs and updating standard library usage patterns.

Key changes:

• Updated build script to use new Zig 0.15.1 APIs for library creation and module management
• Replaced deprecated callconv(.C) with callconv(.c) throughout the codebase
• Updated memory allocation and standard library function calls to match new API signatures

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
build.zig.zon	Updates minimum Zig version requirement to 0.15.1
build.zig	Replaces deprecated addStaticLibrary with new module/library creation pattern
src/zaudio.zig	Updates calling conventions, memory alignment API, ArrayList deinit, and sleep function calls

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[Copilot]

The fromByteUnits method expects a power-of-2 alignment value. Consider validating that mem_alignment (16) is a valid alignment or use a compile-time assertion to ensure this constraint is met.

[hazeycode]

Thanks!