feat(mdns): support allocating mDNS task from SPIRAM (IDFGH-14509)

[zwx1995esp]

Description

This PR supports allocating mDNS task from PSRAM.

Related

Testing

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Checklist

Before submitting a Pull Request, please ensure the following:

• 🚨 This PR does not introduce breaking changes.
• All CI checks (GH Actions) pass.
• Documentation is updated as needed.
• Tests are updated or added as necessary.
• Code is well-commented, especially in complex areas.
• Git history is clean — commits are squashed to the minimum necessary.

[david-cermak]

LGTM in general.

[david-cermak]

LGTM in general.

seems like xTaskCreatePinnedToCoreWithCaps() is not available on v5.0.x

[zwx1995esp]

Hi, @david-cermak Might need your help: there are still two CI failed, one for target esp32, I can not reproduce this issue on my local env. And another one is for linux target, it seems that we do not support some FreeRTOS APIs for linux target. Do you have some suggestions for solving these?

[david-cermak]

Might need your help: there are still two CI failed, one for target esp32, I can not reproduce this issue on my local env. And another one is for linux target, it seems that we do not support some FreeRTOS APIs for linux target. Do you have some suggestions for solving these?

The tests actually flagged a pretry nasty bug while trying to delete the task from itself, including the stack size.
IDF people create a minimal task for that:

https://github.com/espressif/esp-idf/blob/c5865270b50529cd32353f588d8a917d89f3dba4/components/freertos/esp_additions/idf_additions.c#L136-L156

But, here we don't have to be that strict IMO, fixing in #756

Also, should address this

https://github.com/espressif/esp-idf/blob/c5865270b50529cd32353f588d8a917d89f3dba4/components/freertos/esp_additions/idf_additions.c#L113

but since the unit tests pass, it's probably not too serious of a leak