environmentSetupScript support for Presets

[sinemakinci1]

Brief Issue Summary

From comment on #4117

we are heavily relying on the environmentSetupScript key in cmake-kits.json. It doesn't seem to exist in CMake Presets.

According to this issue over at the CMake project it seems to be intentionally left out: https://gitlab.kitware.com/cmake/cmake/-/issues/21619

The environmentSetupScript makes it really easy to use Yocto SDKs, since this the default way to use it with cmake tool chain files (sourcing the environment setup script for e.g. $CC and then using the cmake tool chain file): https://docs.yoctoproject.org/dev/sdk-manual/using.html#running-the-sdk-environment-setup-script

Unfortunately Yocto is lacking documentation on using the SDK with cmake, here is what I found:
https://patchwork.yoctoproject.org/project/oe-core/patch/[email protected]/

https://docs.yoctoproject.org/sdk-manual/working-projects.html

Sourcing the environment script from command line and then opening code from the terminal is also only partially solving the issue. We use the remote ssh/WSL extension a lot, and sourcing an environment before opening the remote/WSL session doesn't seem to be possible.

It would be great to somehow have the environmentSetupScript key available when used with CMake Presets, otherwise we still need to rely on CMake Kits (here is to hope that the cmake tools extension will not drop CMake Kits support).

Thanks in advance :)

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