[llvm] [AsmPrinter] Emit STT_OBJECT type and size for jump tables (PR #214170)

[Sam Elliott via llvm-commits]

lenary wrote:

It's also fun to discover that this was never added even when a separate jump table size section was designed and added (which records the base address and the number of entries only). It does feel like that could have been solved with a combination of symbol size and elf section entry size, and putting the jump tables in their own section. Never mind now I guess. 

https://github.com/llvm/llvm-project/pull/214170