[llvm] [llvm-readobj][ELF] Implement JSON output for --dynamic-table (PR #95976)

[Fred Grim via llvm-commits]

feg208 wrote:

> The subject can probably say Implement JSON output for . The JSON output supports a few dump options and -d is not implemented yet.

Done. Hopefully I did not give offense with the prior phrasing. None was meant certainly.

https://github.com/llvm/llvm-project/pull/95976