Transfer to .NET Foundation

[sakno]

This project is transferring to .NET Foundation. Location of this repository will be changed. Due to transfer, we need to do the following tasks:

• Transfer to dnfadmin
• Change address of GH pages and notify users about new address
• Fix all possible links and references to a new location
• Change Azure Pipelines configuration
• Reconfigure Gitter integration
• Reconfigure LGTM integration
• Fix badges
• Add Code of Conduct
• Fix GH pages
• Update copyrights
• Fix link to repo on raft.github.io website
• Obtain code signing cert
• Publish information about the project on .NET Foundation website

[sakno]

Related issues:

• New .NET Foundation Project Application: .NEXT dotnet-foundation/projects#139
• Code Signing Certificate Request: .NEXT dotnet-foundation/projects#157
• Update repo link to .NEXT Raft implementation raft/raft.github.io#154
• Update link to .NEXT Raft quozd/awesome-dotnet#1013
• Information about .NEXT project dotnet-foundation/website#931