optionally deploy Ghidra

[il-steffen]

We should probably also replace the Ghidra install script with an ansible task: https://github.com/IntelLabs/kafl.fuzzer/blob/master/scripts/ghidra_install.sh

I guess it can be installed to kafl/ folder to keep everything packaged properly. We can add a new GHIDRA_ROOT to .env and adapt the plugin runner: https://github.com/IntelLabs/kafl.fuzzer/blob/master/scripts/ghidra_run.sh