Upgrade to IDF 5.1 to allow support for building for ESP32 C6/H2

[AdrianSoundy]

Description

Currently we can't support/build the later ESP32 C6/H2 soc as they depend on ESP IDF 5.1 which is now available.

Having firmware for these will allow Matter / Thread to be implemented in nanoFramework.

How to solve the problem

Upgrade to IDF 5.1 and sort out all required changes.

Describe alternatives you've considered

No response

Aditional context

No response

[alberk8]

A cursory look at the IDF 5.1 and it looks like a fair bit of work with breaking changes in API and also directory structures.