Feature Request: Bundle more icons with good names

Description of the new feature/enhancement

There are a number of interesting icons that could apply in various situations, such as the VS icon, the Azure or Office/Exchange logos, SQL, GitHub, etc as well as various generic icons like a database drum or a terminal icon.

Proposed technical implementation details (optional)

Adding new icon assets and giving them a good name should be easy for Microsoft-owned properties. Some may need to be invented (eg, C# has no logo, where F# has a rather spiff one).

Care should be taken to include variants for various contrast situations.

Giving them real names instead of GUID names would make them easier to use without having to track down random images on the web, or something buried in the file system.

Proposed icon set:

• Visual Studio
• C# (needs to be defined)
• F#
• Exchange
• GitHub
• Azure
• Microsoft
• Windows (CMD's icon is.. not great)
• Generic network terminal (eg, for SSH, Telnet, FTP, etc)
• Generic database
• Generic file system

Potential third party icons, if they agree?

• Git
• Python
• Julia
• Wolfram
• Create mechanism to propose new ones to engage

The issue names no files or tests. Start by locating the terminal's existing icon assets and naming and contrast conventions, then confirm which proposed icons are in scope with maintainers. Done means the agreed icons are added with usable names and required contrast variants, with any third-party permission or proposal mechanism resolved.