Public issue https://github.com/mackron/miniaudio/issues/990

Signed-off-by: Marcin Serwin <marcin@serwin.dev>

Signed-off-by: Marcin Serwin <marcin@serwin.dev>

Signed-off-by: Marcin Serwin <marcin@serwin.dev>

This forces `MA_NO_THREADING` and `MA_NO_RUNTIME_LINKING`.

The DOS/DJGPP build currently requires `MA_NO_DEVICE_IO`.

Public issue https://github.com/mackron/miniaudio/issues/1019

This disables the WASAPI, DirectSound and WinMM backends which means
you will not get any actual audio output working. An Xbox backend will
need to come later. The main purpose of this commit is to get the main
library compiling.

The main complication arises from the fact that both _WIN32 and
_MSC_VER are defined which makes miniaudio think it's using a normal
desktop Windows build. In practice it mostly works, but there's a few
things needing to be changed specifically for NXDK:

  - `fopen_s()` is not a thing with NXDK. It always uses `fopen()`.
  - There is no `_wfopen()`, nor `wcsrtombs()`, so attempting to open
    a file from a wide character string will fail.
  - There is also no `CreateFileW()`, so this code path will also
    result in an error if you attempt to open a file from a wide
    character path.
  - `CoInitialize()` is not a thing with NXDK and has therefore been
    excluded from the build.
  - `GetFileInformationByHandle()` does not exist, and neither does
    `struct stat` or `stat()`. Since the only file information miniaudio
    attempts to retrieve is the file size, I've implemented a fall back
    which uses the seek/tell/seek pattern when info retrieval is
    unavailable.
  - A fall back has been implemented for comparing wide character path
    extensions which performs a case-sensitive compare instead. This
    means that if you are using wide character paths, miniaudio will not
    detect an extension like "wav" and "WAV" as the same thing. This
    might be made more robust later if there is enough demand.

Public issue https://github.com/mackron/miniaudio/issues/1023

This should improve compiler compatibility for those that do not
define `CreateSemaphoreW()`, such as NXDK.

Signed-off-by: Marcin Serwin <marcin@serwin.dev>

Fixes https://github.com/mackron/miniaudio/pull/1010#issuecomment-3093830252Signed-off-by: Marcin Serwin <marcin@serwin.dev>

The default for creating libraries is static but can be overridden
by setting BUILD_SHARED_LIBS variable. Setting it explicitly makes it
impossible to override.

https://cmake.org/cmake/help/latest/variable/BUILD_SHARED_LIBS.htmlSigned-off-by: Marcin Serwin <marcin@serwin.dev>

Harmless warning on FreeBSD 14.2,
https://cirrus-ci.com/task/4700955851096064?logs=build#L44

```
../subprojects/miniaudio-0.11.22/miniaudio.h:36997:36: warning: a
function declaration without a prototype is deprecated in all versions
of C [-Wstrict-prototypes]
 36997 | static int ma_open_temp_device__oss()
       |                                    ^
       |                                     void
```