Examples environmental related capabilities files are describing the attributes which may be considered common among example projects.
It may include but it is not limited to the following:
soc_caps.h and there is some reason they cannot be added to soc_caps.h. For example, feature definition is not generic enough and is more related to examples use case or it is just some kind of approximation which is good enough for examples but not for SoC drivers.Update the Environmental Capabilities Kconfig with capabilities you consider could be shared among other example projects.
Use orsource statement in your example project Kconfig to include the Environmental Capabilities as shown below.
orsource "$IDF_PATH/examples/common_components/env_caps/$IDF_TARGET/Kconfig.env_caps"