feat(types): add Go baseline runtime types (string, slice, eface, iface, hmap)

[doomedraven]

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 every RZ_API function and struct this PR changes.
• I've added tests that prove my changes are effective (required for changes to RZ_API).
• I've updated the Rizin book with the relevant information (if needed).
• I've used AI tools to generate fully or partially these code changes and I'm sure the changes are not copyrighted by somebody else.

Detailed description
This PR introduces architecture-aware standard Go runtime data structures (stringStruct, string, slice, eface, iface, hmap) into Rizin's type subsystem and automatically loads them during Golang binary analysis.

Changes

1. Type Definitions:
   • Added librz/arch/types/types-golang-32.sdb.txt and librz/arch/types/types-golang-64.sdb.txt.
   • Defined memory layouts and field offsets for canonical Go types:
     • struct stringStruct / typedef string
     • struct slice and struct runtime.slice
     • struct eface and struct runtime.eface
     • struct iface and struct runtime.iface
     • struct hmap and struct runtime.hmap
2. Build System:
   • Registered types-golang-32 and types-golang-64 in sdb_types_files within librz/arch/types/meson.build.
3. Core Analysis Integration:
   • Added rz_golang_load_types() in librz/core/golang.c.
   • Automatically loads the architecture-matched database upon discovering valid Go pclntab functions during rz_core_analysis_recover_golang_functions().
   • Lookup checks both system types_dir and user home_types_dir (~/.local/share/rizin/types).
   • Non-Golang binaries remain untouched to prevent type namespace pollution.

Relationship

Complements #6830 (Calling Conventions and ABI auto-assignment). Together, these provide the type foundation required by decompilers (rz-ghidra) and analysts to inspect Go parameters, return values, and memory buffers.

Test plan

• Verified 138/138 unit tests pass (meson test -C build --suite unit).
• Verified automatic loading on stripped Go ELF binary (ts / tc correctly emits struct definitions).
• Verified non-Go binaries (/bin/ls) remain clean with zero type pollution.
• Added test in test/db/analysis/golang to ensure Go runtime types (e.g. string) are loaded.

Closing issues

[doomedraven]

thank you for review, addressed them all

[doomedraven]

done

[wargio]

@notxvilka have a look please because it seems wr are always applying the types here

[codecov]

Codecov Report

❌ Patch coverage is 57.14286% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 50.37%. Comparing base (d1ee04a) to head (76fe48e).
⚠️ Report is 1 commits behind head on dev.

Files with missing lines	Patch %	Lines
librz/core/golang.c	57.14%	2 Missing and 4 partials ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
librz/core/golang.c	66.82% <57.14%> (-0.17%)	⬇️

... and 12 files with indirect coverage changes

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[notxvilka]

LGTM. It made golang tests slightly slower though

[doomedraven]

yes sorry for that, i will see if i can make it better