core/cmd: port `/R` commands to the rzshell

[giridharprasath]

SQUASH ME

Your checklist for this pull request

• [ ] I've read the guidelines for contributing to this repository
• [ ] I made sure to follow the project's coding style
• [ ] I've documented or updated the documentation of every function and struct this PR changes. If not so I've explained why.
• [ ] I've added tests that prove my fix is effective or that my feature works (if possible)
• [ ] I've updated the rizin book with the relevant information (if needed)

Detailed description

• Inital Port command yaml changes

Test plan

...

Closing issues

...

[giridharprasath]

Still WIP:

• Fix memory leaks
• Add table view for gadget
• Regex filter is broken, should be fixed.

[giridharprasath]

Some notes:

• /Rk is unusable, Will be refactoring it and adding testcases for it in a separate PR.
• Current table view with only columns:

  [0x08048330]> /Rt
  addr bytes disasm 
  ------------------

  Please lmk if any other fields needed to be added which would be helpful in table mode. @XVilka

[XVilka]

Some notes:

* `/Rk` is unusable, Will be refactoring it and adding testcases for it in a separate PR.

* Current table view with only columns:

[0x08048330]> /Rt
addr bytes disasm 
------------------

Please lmk if any other fields needed to be added which would be helpful in table mode. @XVilka

Should be enough for now. Further improvements could be done when necessary.

[XVilka]

@giridharprasath two more missing failed tests:

[XX] db/cmd/cmd_search Rop search w/ regexp
RZ_NOPLUGINS=1 /usr/bin/rizin -escr.utf8=0 -escr.color=0 -escr.interactive=0 -eflirt.sigdb.load.system=false -eflirt.sigdb.load.home=false -N -qc 'e asm.arch=x86
e analysis.arch=x86
e asm.bits=32
wa "add esp,8;pop ebx; pop ebp; ret"
e scr.color=false
/R/ or.*bl
q
' malloc://1024
-- stdout
--- expected
+++ actual
@@ -0,4 +0,5 @@
   0x00000002             085b5d  or byte [ebx + 0x5d], bl
   0x00000005                 c3  ret
+Gadget size: 4

[XX] db/cmd/cmd_search Rop search
RZ_NOPLUGINS=1 /usr/bin/rizin -escr.utf8=0 -escr.color=0 -escr.interactive=0 -eflirt.sigdb.load.system=false -eflirt.sigdb.load.home=false -N -qc 'e asm.arch=x86
e analysis.arch=x86
e asm.bits=32
wa "add esp,8;pop ebx; pop ebp; ret"
e scr.color=false
/R
q
' malloc://1024
-- stdout
--- expected
+++ actual
@@ -2,12 +2,15 @@
   0x00000003                 5b  pop ebx
   0x00000004                 5d  pop ebp
   0x00000005                 c3  ret
+Gadget size: 6

https://github.com/rizinorg/rizin/actions/runs/9329582517/job/25682181832?pr=4504#step:12:238