whisper : reorganize source code + improve CMake (#2256)

* scripts : update sync [no ci]

* files : reorganize [no ci]

* sync : llama.cpp

* cmake : link math library

* cmake : build normal ggml library

* files : move headers to include

* objc : fix path to ggml-metal.h

* ci : fix WHISPER_CUDA -> GGML_CUDA

* scripts : sync LICENSE [no ci]

examples/common-sdl.cpp

@@ -219,7 +219,7 @@ bool sdl_poll_events() {
             case SDL_QUIT:
                 {
                     return false;
-                } break;
+                }
             default:
                 break;
         }