Fix unsigned numbers in i commands JSON output

[XVilka]

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, PJ API was used to print signed integers where they are really unsigned (pj_kN vs pj_kn). Use unsigned for all addresses and sizes. Those structure members that are u64 also changed to print unsigned.

Test plan

CI is green

[XVilka]

Ignore Muon CI job failure - it's network, SourceHut seems down.

[wargio]

Ignore Muon CI job failure - it's network, SourceHut seems down.

probably we should add muon zip to fallback