[docs] Add rjsf-material-ui to the TextField complementary projects

[LorenzHenk]

• I have followed (at least) the PR section of the contributing guide.

As react-jsonschema-form supports themes since v1.6.0, it was time to create a Material UI theme.

Check the theme out at https://github.com/cybertec-postgresql/rjsf-material-ui!

Here is the live playground: https://cybertec-postgresql.github.io/rjsf-material-ui/

This change adds our react-jsonschema-form material-ui theme implementation to the list of complementary projects in the TextField example documentation page.

[mui-pr-bot]

No bundle size changes comparing c536428...b1ddca4

Generated by 🚫 dangerJS against b1ddca4

[oliviertassinari]

@LorenzHenk Thanks for sharing. We are happy to see this new form library. However, we promote existing, well-established solutions in the documentation. Maybe you could give it a try in the future if the project gets traction?

On a broader topic, I think that Material-UI should double down on better supporting Formik: #15585.

[LorenzHenk]

Alright, thanks for your time!

[lamuertepeluda]

pity, I think integration with jsonschema/rjsf is an interesting theme for MUI. There are several libraries attempting to do so, but @LorenzHenk 's is the only one that tries using TypeScript, as much as incomplete the mapping may be and the traction still low.
I understand Formik is a great project, but I really like the (meta) data-driven, declarative approach of rjsf. I hope to hear some news on this front in the future.