[LyX/master] #11453 make LyX app icons on Mac retina ready - use the Lydia.svg from Mike

[Stephan Witt]

commit 700f03d0c28cbc367ff4210f190d746b8f872e6a
Author: Stephan Witt <switt at lyx.org>
Date:   Sun Feb 7 13:05:28 2021 +0100

    #11453 make LyX app icons on Mac retina ready - use the Lydia.svg from Mike

 development/MacOSX/LyXapp.icns |  Bin 34323 -> 288640 bytes
 development/MacOSX/Lydia.svg   |  512 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 512 insertions(+), 0 deletions(-)