Rebuild FFmpeg for Windows to reduce install size

scripts/build-ffmpeg-win32.sh

@@ -0,0 +1,3 @@
+./configure --toolchain=msvc --enable-cross-compile --enable-pic --enable-shared --disable-static --disable-all --enable-avcodec --enable-decoder=h264 --enable-decoder=hevc --enable-hwaccel=h264_dxva2 --enable-hwaccel=hevc_dxva2
+make clean
+make -j4

scripts/build-ffmpeg-win64.sh

@@ -0,0 +1,3 @@
+./configure --toolchain=msvc --enable-pic --enable-shared --disable-static --disable-all --enable-avcodec --enable-decoder=h264 --enable-decoder=hevc --enable-hwaccel=h264_dxva2 --enable-hwaccel=hevc_dxva2
+make clean
+make -j4