Add a confirmation that Bootcd/Livecd has been properly created

Since the recent change to the new tools the output shown when the bootcd is properly compiled is:

[2889/2889] cmd.exe /C "cd /D C:\ros_m...t C:/ros_msvc/reactos/boot/bootcd.lst"

C:\ros_msvc\reactos\host-tools\mkisofs.exe: Warning: Cannot add inode hints with

 -no-cache-inodes.

Warning: Creating ISO-9660:1999 (version 2) filesystem.

Warning: ISO-9660 filenames longer than 31 may cause buffer overflows in the OS.

Which is far away from identifying that building the Bootcd was done correctly.
colin finck can you add a small notification at the end just saying "The ISO was done correctly!", in gold letters if possible

PS: Using msvc here.