InMemoryLeaseContainer: Adds public API to use InMemoryLeaseContainer with ChangeFeedProcessorBuilder (#5182)

Enabling using InMemoryLeaseContainer as public contract.

**LIMITATIONS: Estimator API is not supported with
InMemoryLeaseContainer.**

```C#
public class ChangeFeedProcessorBuilder
{
    public virtual ChangeFeedProcessorBuilder WithInMemoryLeaseContainer();
}
```

Usage

```C#
ChangeFeedProcessor processor = this.Container
    .GetChangeFeedProcessorBuilder(...)
    .WithInstanceName("...")
    .WithInMemoryLeaseContainer()
    .Build();
```

## Type of change

Please delete options that are not relevant.

- [] Bug fix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [] This change requires a documentation update

## Closing issues

To automatically close an issue: closes #5177

---------

Co-authored-by: Debdatta Kunda <[email protected]>

Author: kirankumarkolli

Microsoft.Azure.Cosmos/src/ChangeFeedProcessor/ChangeFeedProcessorBuilder.cs

@@ -213,12 +213,11 @@ public ChangeFeedProcessorBuilder WithLeaseContainer(Container leaseContainer)
 
         /// <summary>
         /// Uses an in-memory container to maintain state of the leases
-        /// </summary>
-        /// <remarks>
+        /// 
         /// Using an in-memory container restricts the scaling capability to just the instance running the current processor.
-        /// </remarks>
+        /// </summary>
         /// <returns>The instance of <see cref="ChangeFeedProcessorBuilder"/> to use.</returns>
-        internal virtual ChangeFeedProcessorBuilder WithInMemoryLeaseContainer()
+        public virtual ChangeFeedProcessorBuilder WithInMemoryLeaseContainer()
         {
             if (this.leaseContainer != null)
             {

Microsoft.Azure.Cosmos/tests/Microsoft.Azure.Cosmos.Tests/Contracts/DotNetSDKAPI.json

@@ -370,6 +370,11 @@
           "Attributes": [],
           "MethodInfo": "Microsoft.Azure.Cosmos.ChangeFeedProcessorBuilder WithErrorNotification(ChangeFeedMonitorErrorDelegate);IsAbstract:False;IsStatic:False;IsVirtual:False;IsGenericMethod:False;IsConstructor:False;IsFinal:False;"
         },
+        "Microsoft.Azure.Cosmos.ChangeFeedProcessorBuilder WithInMemoryLeaseContainer()": {
+          "Type": "Method",
+          "Attributes": [],
+          "MethodInfo": "Microsoft.Azure.Cosmos.ChangeFeedProcessorBuilder WithInMemoryLeaseContainer();IsAbstract:False;IsStatic:False;IsVirtual:True;IsGenericMethod:False;IsConstructor:False;IsFinal:False;"
+        },
         "Microsoft.Azure.Cosmos.ChangeFeedProcessorBuilder WithInstanceName(System.String)": {
           "Type": "Method",
           "Attributes": [],