Convert ag to rzshell

[imbillow]

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

Before many ag commands had a "format" as a part of the command itself, e.g. agfk - here command was agf while k is the format. For the time being it will become agf k, unless you have better ideas.

ag<graphtype><format> -> ag<graphtype> <format>

but ag<graphtype>w -> agw <graphtype>

Usage: ag<?>   # Analysis graph commands
| aga <format>=           # Data reference graph
| agA <format>=           # Global data references graph
| agc <format>=           # Function callgraph
| agC <format>=           # Global callgraph
| agd [<format> [<addr>]] # Diff graph
| agf <format>=           # Basic blocks function graph
| agi <format>=           # Imports graph
| agr <format>=           # References graph
| agR <format>=           # Global references graph
| ags                     # Unknown graph
| agl                     # Line graph ?
| agx <format>=           # Cross-references graph
| agg <format>=           # Custom graph
| ag-                     # Clear the custom graph
| agn[-]                  # Managing custom graph nodes
| age[-]                  # Managing custom graph edges
| agw <graphtype> <path>  # Write to path or display graph image (see graph.gv.format)

Maybe open another PR to do more refactoring and export some APIs
But this PR mainly focuses on convert to rzshell

Test plan

CI is green

Closing issues

Partially addresses #1442

previous PR #2757

[XVilka]

Assuming it's only the first step and there will be some more additional cleanup and refactoring, this PR is OK except for one thing, in my opinion, - the default_value: ' ' of the format. I hope there could be a better solution. cc @ret2libc @wargio

[XVilka]

@imbillow please rebase on top of the latest dev

[XVilka]

@imbillow, why did you remove some tests?

[imbillow]

@imbillow, why did you remove some tests?

Because the processing of rz_core_analysis_graph is very problematic, but I don't want to solve it in this PR, so temporarily delete these tests.

[XVilka]

@imbillow then please mark them "BROKEN=1" instead of removing and open an issue so they aren't forgotten.

[imbillow]

#2938

OK

[XVilka]

@ret2libc please take a look again and let's merge this if you don't have any big objections. Further graph improvements can be done in separate PRs.