Is your feature request related to a problem? Please describe.
Add a generator for RISC-V dependency files used in the Capstone project. These dependency files are human written and can benefit from being generated by UDB.

Describe the solution you'd like
The following files are candidates for being automatically generated:

• include/capstone/riscv.h
• The following switch case in RISCVInstPrinter.c. However, the following CSRs are missing in UDB to be completely generated:
  ustatus, uie, utvec, uscratch, uepc, ucause, utval, uip, sedeleg, sideleg, sie, dscratch
• RISCVMappingInsn.inc, RISCVMappingInsnOp.inc - Instruction definition tables

These files are currently being generated using TableGen by LLVM, but can be generated through UDB as well:

• arch/RISCV/RISCVGenAsmWriter.inc
• arch/RISCV/RISCVGenDisassemblerTables.inc
• arch/RISCV/RISCVGenInsnNameMaps.inc