Filter AWS Explorer resources (S3 objects, Lambdas, CloudWatch logs/groups, ...)

**Is your feature request related to a problem? Please describe.**

I have millions of S3 objects, so it's challenging/sometimes impossible to locate an object by scrolling through the existing explorer.

**Describe the solution you'd like**

It would be great if there were a filter box at the top of the objects list (like in the AWS web console) where I could paste a prefix and filter for objects that match.

**Describe alternatives you've considered**

Using the web console.

Start at the AWS Explorer objects list and compare its S3 object browsing with the AWS web console's prefix filter. Clarify whether the request covers only S3 objects or also Lambdas and CloudWatch logs/groups. Done means users can enter a prefix and filter the intended resource lists without scrolling through all resources.

Written by the indexing model from the issue text.