fix(packaging): exclude updater scripts from stable builds

Stable users expect a fixed version (v0.41.0). Including updater.bat and
installer/updater.ps1 would silently upgrade them to nightly, contradicting
the reason they chose a stable build. Only copy installer/ and doc/.

Author: tasty0tomato

packages/mpv-packaging.cmake

@@ -7,7 +7,7 @@ if [ -d $dir ] && [[ $dir =~ mpv-$3.*-git-* ]]; then
     cp -r $1/mpv-root/* $1/$3/d3dcompiler_43.dll $dir
     7z a -m0=lzma2 -mx=9 -ms=on $dir.7z $dir/* -x!*.7z
 elif [ -d $dir ] && [[ $dir =~ mpv-.*$3 ]] && [[ ! $dir =~ -git- ]]; then
-    cp -r $1/mpv-root/* $1/$3/d3dcompiler_43.dll $dir
+    cp -r $1/mpv-root/installer $1/mpv-root/doc $1/$3/d3dcompiler_43.dll $dir
     7z a -m0=lzma2 -mx=9 -ms=on $dir.7z $dir/* -x!*.7z
 elif [ -d $dir ]; then
     7z a -m0=lzma2 -mx=9 -ms=on $dir.7z $dir/* -x!*.7z