Add documentation comments to the KnockoutBindingGroup #2678

Job	Run time
JS unit tests	2m 2s
Build all projects without errors	12m 32s
.NET unit tests (ubuntu-latest)	3m 57s
Build published projects without warnings (Release)	3m 41s
.NET unit tests (windows-2022)	14m 7s
Build published projects without warnings (Debug)	3m 57s
UI tests (chrome, ubuntu-latest, Production, Default)	18m 15s
.NET unit tests (macOS-latest)	6m 17s
UI tests (chrome, windows-2022, Development, Default)	30m 54s
UI tests (firefox, ubuntu-latest, Development, Default)	25m 10s
UI tests (firefox, ubuntu-latest, Production, Default)	21m 13s
UI tests (firefox, ubuntu-latest, Development, ExperimentalFeaturesTests)	20m 57s
UI tests (chrome, ubuntu-latest, Production, ExperimentalFeaturesTests)	17m 39s
	3h 0m 41s

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