Add summaries for Microsoft.Extensions namespaces

[gewarren]

Contributes to #10998

[BillWagner]

Once you and the product team are happy, go ahead and

[shyamnamboodiripad]

[learn-build-service-prod]

Learn Build status updates of commit c44409c:

✅ Validation status: passed

File	Status	Preview URL	Details
xml/ns-Microsoft.Extensions.AI.Evaluation.Quality.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.AI.Evaluation.Reporting.Formats.Html.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.AI.Evaluation.Reporting.Formats.Json.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.AI.Evaluation.Reporting.Storage.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.AI.Evaluation.Reporting.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.AI.Evaluation.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.AI.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.AmbientMetadata.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.AsyncState.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.Caching.Distributed.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.Caching.Hybrid.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.Caching.Memory.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.Caching.SqlServer.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.Caching.StackExchangeRedis.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.Compliance.Classification.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.Compliance.Redaction.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.Compliance.Testing.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.Configuration.EnvironmentVariables.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.Configuration.KeyPerFile.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.DependencyInjection.Extensions.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.DependencyInjection.Pools.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.DependencyModel.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.DiagnosticAdapter.Infrastructure.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.Diagnostics.Enrichment.xml	✅Succeeded	View
xml/ns-Microsoft.Extensions.Diagnostics.ExceptionSummarization.xml	✅Succeeded	View

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