devel/ghidra: fix permissions be able to run ghidra from the command line
Also:
- remove from SHEBANG_FILES those that are related with debugging
- add a desktop file + icon from: https://github.com/NationalSecurityAgency/ghidra/discussions/3709
- add a pkg-message
- configure JAVA_HOME using the default installed java version
PR: 280494
Fixes: e2b8d2a61766 (update 9.1 → 11.1.2, take maintainership)
MFH: 2024Q3
(cherry picked from commit 2bf3f54aafa6470ebedc2f048ea28453afc76005)
