Rizin as subproject [rebased]

[amibranch]

DRAFT*

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

This is just a rebased version of:
#4679
#3706

This PR was created for checking the CI only!

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Test plan

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Closing issues

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[XVilka]

Capstone build also fails with pure C99:

FAILED: subprojects/capstone-next/libcapstone.a.p/cs.c.o 
gcc-12 -Isubprojects/capstone-next/libcapstone.a.p -I../subprojects/capstone-next/include -I../subprojects/capstone-next/include/capstone -fdiagnostics-color=always -fsanitize=address,undefined -fno-omit-frame-pointer -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Werror -std=c99 -O2 -g -DASAN=1 -DRZ_ASSERT_STDOUT=1 -Wno-cpp -ftrivial-auto-var-init=pattern -funsigned-char -fPIC -DCAPSTONE_X86_ATT_DISABLE_NO -DCAPSTONE_X86_REDUCE_NO -DCAPSTONE_USE_SYS_DYN_MEM -DCAPSTONE_DIET_NO -DCAPSTONE_HAS_ALPHA -DCAPSTONE_HAS_ARM -DCAPSTONE_HAS_AARCH64 -DCAPSTONE_HAS_HPPA -DCAPSTONE_HAS_M68K -DCAPSTONE_HAS_M680X -DCAPSTONE_HAS_MIPS -DCAPSTONE_HAS_POWERPC -DCAPSTONE_HAS_SPARC -DCAPSTONE_HAS_SYSZ -DCAPSTONE_HAS_X86 -DCAPSTONE_HAS_XCORE -DCAPSTONE_HAS_TMS320C64X -DCAPSTONE_HAS_TRICORE -Wno-maybe-uninitialized -MD -MQ subprojects/capstone-next/libcapstone.a.p/cs.c.o -MF subprojects/capstone-next/libcapstone.a.p/cs.c.o.d -o subprojects/capstone-next/libcapstone.a.p/cs.c.o -c ../subprojects/capstone-next/cs.c
../subprojects/capstone-next/cs.c: In function ‘fill_insn’:
../subprojects/capstone-next/cs.c:867:47: error: ‘__builtin_strncpy’ output may be truncated copying 31 bytes from a string of length 31 [-Werror=stringop-truncation]
  867 |                                         (void)strncpy(insn->mnemonic, str, sizeof(insn->mnemonic) - 1);
      |                                               ^
cc1: all warnings being treated as errors

cc @Rot127

[wargio]

why there are 2 branches with the same code? just use one PR and rebase within it.