xilinx_v2021.1_update1: daemon: Update to inotify handling of files

dnf install creates tmp files and then does 'mv' to the actual files.
As a result new packages added using dnf were not detected by daemon
since shell.json would not exist. Take care of it in the move notification.

While at it, change list output to show number of slots as 0 for flat shell
designs.

Signed-off-by: Puja Gupta <pujag@xilinx.com>

xilinx-v2020.2.2-k26

Update license info

Update license info missing in some files. Also update README with
the latest changes.

Signed-off-by: Puja Gupta <pujag@xilinx.com>