Revise ESP-NETIF diagram for clarity (IDFGH-16799)

[shiinakaze]

Updated the diagram to clarify the data and event flow in the ESP-NETIF architecture.

Description

Revise ESP-NETIF diagram for clarity

Related

ESP-NETIF

Testing

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Checklist

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Note

Replaces the ESP-NETIF ASCII architecture diagram in zh_CN docs with an English-labeled, clearer layout of data/event flows, including L2 TAP paths.

• Documentation:
  • Update ASCII architecture diagram in docs/zh_CN/api-reference/network/esp_netif.rst:
    • Translate labels to English (e.g., USER CODE, NETWORK STACK, NETIF, L2 TAP paths).
    • Adjust diagram layout and arrows for clearer depiction of init, events, transmit/receive, and L2 TAP read/write flows.

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[KaeLL]

That's the one from the chinese docs, and you translated it. Is that intentional?

[shiinakaze]

That's the one from the chinese docs, and you translated it. Is that intentional?

I’m a native Chinese speaker. If this diagram is written in Chinese, the formatting becomes messy, so it’s better to use English.