Expose Inline_Dump from Generic_Dump

[leocreuse]

There currently isn't a lot of utility to print arbitrary TOML values, which could be useful either for debugging purposes, or in the user interface of tools to display parts TOML documents in a concise fashion.

There such a function already exists, but it currently only is an implementation detail of TOML.Generic_Dump, so it would not be relatively simple to refactor the code base to make the function publicly available. Then each tool

I have a PR ready to submit if this is deemed a good idea.