Port MD4 implementation from mono/mono

[steveisok]

In order to support NTLM in Android, we need a managed implementation of the MD4 algorithm. The best place to pull from would be the one found in mono/mono.

The port should:

• Be an implementation detail and is not intended to be a public API
• Part of System.Net.Security
• Use MD4.cs and MD4Managed.cs

/cc @GrabYourPitchforks

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Issue Details

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In order to support NTLM in Android, we need a managed implementation of the MD4 algorithm. The best place to pull from would be the one found in mono/mono.

The port should:

• Be an implementation detail and is not intended to be a public API
• Part of System.Net.Security
• Use MD4.cs and MD4Managed.cs

/cc @GrabYourPitchforks

Author:	steveisok
Assignees:	MaximLipnin
Labels:	area-System.Net.Security, os-android
Milestone:	7.0.0

[MaximLipnin]

Addressed in #62074