Add package readmes to shipping libraries packages

[ViktorHofer]

Continuation of #91210 & #92228

This issue tracks adding the remaining 30 package readmes to our shipping libraries packages.

One of the top customer problems that package consumers are facing is lack of documentation. As such, we are driving an effort to increase the adoption and quality of NuGet package READMEs.

Ask

To lead by example and ensure that our packages have the maximum impact, we would greatly appreciate your support in increasing the adoption and quality of NuGet package READMEs.

Why

The README file is an essential part of your package as it provides important information to users and helps them understand what the package is and what it does quickly. Also, README is the first things for users when they view your package on NuGet.org and soon other tooling, it is crucial for package authors to write and include high-quality READMEs for their packages.

How

This issue lists all the remaining package that are missing package READMEs. Feel free to submit a PR that targets the main branch by using the NEW link from the table below. For a great example, please see System.Text.Json's package README. Expect to spend ~15-30min of your time per README. Please try to keep documentation as minimal as possible to avoid duplicating information that is already available on docs.microsoft.com.

Packages

This list is sorted alphabetically.

Package		Status	Owner
Microsoft.Bcl.Memory	New	✅
Microsoft.Extensions.DependencyInjection.Specification.Tests	New	✅
Microsoft.Extensions.Diagnostics	New		@tommcdon
Microsoft.Extensions.Diagnostics.Abstractions	New		@tommcdon
Microsoft.Extensions.FileProviders.Composite	New		@jeffhandley
Microsoft.Extensions.Logging.Configuration	New		@ericstj
Microsoft.Extensions.Logging.EventLog	New		@ericstj
Microsoft.Extensions.Logging.EventSource	New		@ericstj
Microsoft.NET.WebAssembly.Threading	New		@lewing
Microsoft.XmlSerializer.Generator	New		@HongGit
System.CodeDom	New	✅
System.ComponentModel.Composition	New		@ericstj
System.ComponentModel.Composition.Registration	New		@ericstj
System.Composition	New	✅
System.Composition.AttributedModel	New	✅
System.Composition.Convention	New	✅
System.Composition.Hosting	New	✅
System.Composition.Runtime	New	✅
System.Composition.TypedParts	New	✅
System.Diagnostics.DiagnosticSource	New		@tommcdon
System.Formats.Asn1	New	✅
System.Formats.Nrbf	New	✅
System.IO.Packaging	New		@ericstj
System.Reflection.Context	New	✅
System.Resources.Extensions	New		@ericstj
System.Runtime.Serialization.Schema	New		@HongGit
System.Security.Cryptography.Cose	New		@jeffhandley
System.Security.Cryptography.Pkcs	New		@jeffhandley
System.Security.Cryptography.Xml	New		@jeffhandley
System.Security.Permissions	New		@jeffhandley

FWIW I created this table via the following code: https://gist.github.com/ViktorHofer/e4ba1766b7ee751261515781e7bb5927

✅ (:white_check_mark:) ->merged

🕜 (:clock130:) -> under review

cc @lyndaidaii @ericstj @artl93 @eNeRGy164

[ghost]

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Issue Details

---

Continuation of #91210 & #92228

This issue tracks adding the remaining package readmes to our shipping libraries packages.

Author:	ViktorHofer
Assignees:	-
Labels:	area-Infrastructure-libraries
Milestone:	9.0.0

[eNeRGy164]

@ViktorHofer #106344 for System.Formats.Nrbf