I'm attempting to use the library in a Multi Tenant scenario where ea…

…ch tenant connects to their own specific Cosmos DB (#428)

Along with the previous change I did to make ICosmosClientProvider public (#398)

* made ICosmosContainerProvider public
The Default implementation caches containers, I needed a custom implementation to cache these per Tenant
* Repository option
- I made DatanaseId, ContainerId and connection string virtual
Again in my implementation I need these to be tenant specific, making these virtual allows me over replace this with a MultiTenant version on RepositoryOptions

src/Microsoft.Azure.CosmosRepository/Options/RepositoryOptions.cs

@@ -22,7 +22,7 @@ public class RepositoryOptions
     /// <summary>
     /// Gets or sets the cosmos connection string. Primary or secondary connection strings are valid.
     /// </summary>
-    public string? CosmosConnectionString { get; set; }
+    public virtual string? CosmosConnectionString { get; set; }
 
     /// <summary>
     /// Gets or sets the cosmos account endpoint URI. This can be retrieved from the Overview section of the Azure Portal.
@@ -39,15 +39,15 @@ public class RepositoryOptions
     /// <remarks>
     /// Defaults to "database", unless otherwise specified.
     /// </remarks>
-    public string DatabaseId { get; set; } = "database";
+    public virtual string DatabaseId { get; set; } = "database";
 
     /// <summary>
     /// Gets or sets the name identifier for the cosmos container that corresponds to the <see cref="DatabaseId"/>.
     /// </summary>
     /// <remarks>
     /// Defaults to "container", unless otherwise specified.
     /// </remarks>
-    public string ContainerId { get; set; } = "container";
+    public virtual string ContainerId { get; set; } = "container";
 
     /// <summary>
     /// Gets or sets whether to optimize bandwidth.

src/Microsoft.Azure.CosmosRepository/Providers/ICosmosContainerProvider.cs

@@ -7,7 +7,7 @@ namespace Microsoft.Azure.CosmosRepository.Providers;
 /// The cosmos container provider exposes a means of providing
 /// an instance to the configured <see cref="Container"/> object.
 /// </summary>
-interface ICosmosContainerProvider<TItem> where TItem : IItem
+public interface ICosmosContainerProvider<TItem> where TItem : IItem
 {
     /// <summary>
     /// Asynchronously gets the configured <see cref="Container"/> instance that corresponds to the