Add support for PS5 etaHEN direct install

[paradix]

Since etaHEN 1.7b direct package installation similar to RPI on PS4 is possible.
https://github.com/Gkiokan/ps4-remote-pkg-sender has added the possibility to send to PS4 fpkg to PS5 etaHEN.
Could you consider adding support for etaHEN into PS4RPS?

[scrdcow]

This would be awesome!