[rust] support model/maps as deep/explode params

[aminya]

This adds support for deepObject and explode styling parameters in the API for rust requests via reqwest.

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[aminya]

@jacob-pro Could you have a look?

[wing328]

thanks for the PR

cc @frol (2017/07) @farcaller (2017/08) @richardwhiuk (2019/07) @paladinzh (2020/05) @jacob-pro (2022/10)

[wing328]

@aminya thanks for the PR. have you been using this improvement in your local environment/production?

If you've been using it in production without issues for a while, then we can definitely go ahead to merge it.

[aminya]

@aminya thanks for the PR. have you been using this improvement in your local environment/production?

If you've been using it in production without issues for a while, then we can definitely go ahead to merge it.

You're welcome. Yes, I've been using it without any issues! It's ready to go.