Make scratchcpp-audio a shared library

Should fix this build error:
ld: warning: libminiaudio.so, needed by ../../scratchcpp-render/libscratchcpp/libscratchcpp.so, not found (try using -rpath or -rpath-link)

Author: adazem009

src/audio/CMakeLists.txt

@@ -1,6 +1,6 @@
 option(LIBSCRATCHCPP_AUDIO_SUPPORT "Audio support" ON)
 
-add_library(scratchcpp-audio STATIC)
+add_library(scratchcpp-audio SHARED)
 set(MINIAUDIO_SRC internal/thirdparty/miniaudio)
 
 if (LIBSCRATCHCPP_AUDIO_SUPPORT)