feat: update the icon

CMakeLists.txt

···
 add_compile_options(-fno-threadsafe-statics)
 add_compile_options(-D_GLIBCXX_HAS_GTHREADS=0)
 
-add_executable(ShortwaveApp WIN32 main.cpp)
+if(MINGW)
+    set(WIN32_ICON shortwave.rc)
+endif()
+
+add_executable(ShortwaveApp WIN32 main.cpp ${WIN32_ICON})
 
 # Add BASS library from libs directory
 target_include_directories(ShortwaveApp PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
···
 target_include_directories(ShortwaveApp PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
 
 # Minimal static linking and avoid threading dependencies
-target_link_options(ShortwaveApp PRIVATE 
-    -static-libgcc 
+target_link_options(ShortwaveApp PRIVATE
+    -static-libgcc
     -static-libstdc++
     -static
     -Wl,--subsystem,windows:5.01
···
         RUNTIME_OUTPUT_DIRECTORY_DEBUG "${OUTPUT_DIR}"
         RUNTIME_OUTPUT_DIRECTORY_RELEASE "${OUTPUT_DIR}"
     )
-endif()
+endif()

shortwave.rc

···
+IDI_ICON1 ICON DISCARDABLE "shortwave.ico"