feat(network): Adds Network Library documentation (espressif#11999)

* feat(network): Adds Network Library documentation

* fix(network): formatting in network API documentation

* fix(doc): Use proper WiFi interfaces

* feat(doc): Document isOnline() function in network API

Added documentation for the isOnline() function to check network status.

* fix(doc): Update docs/en/api/network.rst

Co-authored-by: Copilot <[email protected]>

* fix(doc): Update docs/en/api/network.rst

Co-authored-by: Copilot <[email protected]>

* ci(pre-commit): Apply automatic fixes

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Co-authored-by: Me No Dev <[email protected]>
Co-authored-by: Copilot <[email protected]>
Co-authored-by: pre-commit-ci-lite[bot] <117423508+pre-commit-ci-lite[bot]@users.noreply.github.com>

Author: 4 people