Code Quality: Create an `IsNetFramework` or equivalent switch to determine target frameworks

[Lamparter]

Description

There should be a IsNetFramework, IsNetStandard, IsNetFx and IsNetCore switch that determines the target framework.

Concerned code

• eng/

Gains

• Easier to track target frameworks for capabilities

Requirements

• Create a new file called TfmTracking.props
• Add logic to set switch based on property

Comments

No response