Add helper for common queries

There's case which I have to query for common environment all the time, having to typing `env("<environment>")` can be cumbersome.

Add utility function as an alias to common environment query 
Example:
`env("development")` can have `env.isDev`, the same can be applied to `env.isProd` and so on.

That utilities can be functions or simple values without needing to calling a function
