[Feature Request]: Add pin feature to environment

[blaqshyd]

Yes, can something like how POSTMAN does it be included? Where you can pin one/more environment to a collection? That makes it easier to track even if you still have to change environment every time you select another collection. I switch between different collections a lot and it's a hassle to always select the environment every time especially when you've a lot of environment in the workspace. @antiflasher

Originally posted by @blaqshyd in #213