CMakePresets.json: Add the ability to conditionally disable presets

Help/manual/cmake-presets.7.rst

Help/manual/presets/example.json

Help/manual/presets/schema.json

Help/release/dev/cmake-presets-condition.rst

Source/QtDialog/QCMake.cxx

Source/cmCMakePresetsFile.cxx

Source/cmCMakePresetsFile.h

Source/cmCMakePresetsFileInternal.h

Source/cmCMakePresetsFileReadJSON.cxx

Source/cmCTest.cxx

Source/cmJSONHelpers.h

Source/cmake.cxx

Tests/RunCMake/CMakePresets/ConditionFuture-result.txt

Tests/RunCMake/CMakePresets/ConditionFuture-stderr.txt

Tests/RunCMake/CMakePresets/ConditionFuture.json.in

Tests/RunCMake/CMakePresets/Conditions.json.in

Tests/RunCMake/CMakePresets/ListConditions-stdout.txt

Tests/RunCMake/CMakePresets/RunCMakeTest.cmake

Tests/RunCMake/CMakePresets/SimpleFalse-result.txt

Tests/RunCMake/CMakePresets/SimpleFalse-stderr.txt