[Feature]: add current env name to the appsmith context object

[sneha122]

Is there an existing issue for this?

• I have searched the existing issues

Summary

current environment name should be accessible as properties under the Appsmith namespace.

Why should this be worked on?

Environment name is very useful as many users use it as a kind of test/production environment split, If you could write scripts that notice that you are in a specific environment, you could cause certain things to function differently if you are in test mode or production mode.