This PR is to further support for TOML. To allow and generate quoted
names in config files including those separated by the parent separator.
like
```toml
"sub"."sub2".value=1
'sub'.'sub.sub'.value=2
```
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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>