Fix shared return jump to relocs

[Crabtux]

Ghidra uses some scripts written in Java to fixup some analysis corner cases (see Ghidra/Features/Base/ghidra_scripts), but currently rz-ghidra is not able to use them, which causes some decompiling issues. This PR makes an attempt to fixup one of the corner cases. Details about the issue can be found in #202.

I try to solve the issue by adding a hook before decompiling action, but after the initialization of the RizinArchitecture. The hook function uses rizin to analyse shared return calls to relocs, and fixup the P-Code using setFlowOverride() API provided by Ghidra.

Expected to fix #202.

[XVilka]

The red CI should be fixed once rizinorg/cutter#3319 is merged

[XVilka]

@thestr4ng3r take a look please

[thestr4ng3r]

Thanks! The test case is also very useful.