Port System.Collections API docs.

[eiriktsarpalis]

Contributes to dotnet/runtime#88565

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Issue Details

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Contributes to dotnet/runtime#88565

Author:	eiriktsarpalis
Assignees:	eiriktsarpalis
Labels:	area-System.Collections
Milestone:	-

[carlossanlop]

The CI is stuck. Closing and reopening.

[learn-build-service-prod]

Learn Build status updates of commit b451ce9:

✅ Validation status: passed

File	Status	Preview URL	Details
xml/System.Collections.Frozen/FrozenDictionary.xml	✅Succeeded	View
xml/System.Collections.Frozen/FrozenDictionary`2.xml	✅Succeeded	View
xml/System.Collections.Frozen/FrozenDictionary`2+Enumerator.xml	✅Succeeded	View
xml/System.Collections.Frozen/FrozenSet.xml	✅Succeeded	View
xml/System.Collections.Frozen/FrozenSet`1.xml	✅Succeeded	View
xml/System.Collections.Frozen/FrozenSet`1+Enumerator.xml	✅Succeeded	View
xml/System.Collections.Generic/Dictionary`2+KeyCollection.xml	✅Succeeded	View
xml/System.Collections.Generic/PriorityQueue`2.xml	✅Succeeded	View
xml/System.Collections.Generic/SortedDictionary`2+KeyCollection.xml	✅Succeeded	View
xml/System.Collections.Immutable/ImmutableHashSet.xml	✅Succeeded	View
xml/System.Collections.Immutable/ImmutableList.xml	✅Succeeded	View
xml/System.Collections.Immutable/ImmutableQueue.xml	✅Succeeded	View
xml/System.Collections.Immutable/ImmutableSortedSet.xml	✅Succeeded	View
xml/System.Collections.Immutable/ImmutableStack.xml	✅Succeeded	View
xml/System.Collections/BitArray.xml	✅Succeeded	View

For more details, please refer to the build report.

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