[esp32_hosted] Add support for remote wifi

[swoboda1337]

Description:

Add esp32 hosted docs

Related issue (if applicable): fixes

Pull request in esphome with YAML changes (if applicable):

• esphome/esphome#8833

Checklist:

• [x] I am merging into next because this is new documentation that has a matching pull-request in esphome as linked above.
  or

• [ ] I am merging into current because this is a fix, change and/or adjustment in the current documentation and is not for a new component or feature.

• [x] Link added in /components/index.rst when creating new documents for new components or cookbook.

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[swoboda1337]

Remembered I forgot to update the docs, fixed now.