linux, audio: add hooks acmFormatSuggest (#455)

## Link to GitHub Issue, if one exists
n/a

## Description of change

`acmFormatSuggest` is known to cause significant perf issues on Linux;
add a hook to return cached results.

The fix is only active in the Linux variant.

For discussion, see
* https://codeberg.org/nixac/spicetools/issues/2
* https://codeberg.org/nixac/spicetools/issues/4

## Testing
I've only tested this on Windows, checking if iidx and popn can boot,
play songs without audio issues.

src/spice2x/games/iidx/iidx.cpp

@@ -235,6 +235,9 @@ namespace games::iidx {
         } else if (data.find(" W:touch: missing trigger:") != std::string::npos) {
             out.clear();
             return true;
+        } else if (data.find(" W:CTexture: no such texture: id 0") != std::string::npos) {
+            out.clear();
+            return true;
         } else if (data.find("SuperstepSound: Audio device is not available") != std::string::npos) {
             deferredlogs::defer_error_messages(deferredlogs::SUPERSTEP_SOUND_ERROR_MESSAGE);
             return false;