build: only build static converter on Win32

- macOS Clang seems to encounter the following error:

```
[  3%] Linking CXX executable binary_to_compressed_c
ld: library not found for -lcrt0.o
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

- Linux has no problem to run dynamically-linked converter.
- Only Win32 with MinGW has problem running dynamically-linked one. So I only do polyfill for this.

Author: AnClark

CMakeLists.txt

@@ -77,7 +77,10 @@ make_directory (${GENERATED_WAVES_DIR})
 
 # Binary-to-C converter from Dear ImGui
 add_executable (binary_to_compressed_c utils/binary_to_compressed_c.cpp)
-target_link_options (binary_to_compressed_c PRIVATE -static)
+# Only build static converter on Win32 or MinGW cross-compiling
+if (WIN32 AND NOT MSVC)
+    target_link_options (binary_to_compressed_c PRIVATE -static)
+endif ()
 
 set (WAVES_DIR ${PROJECT_SOURCE_DIR}/src/waves)
 set (GENERATED_WAVE_HEADER ${GENERATED_WAVES_DIR}/minaton_waves.hpp)