Feature: make CreateRangeSelection meaningful

Currently, the `$createRangeSelection` function trivially select the first position [see here](https://github.com/facebook/lexical/blob/14554bf94d20405d27efcfe4dcaf457a3db4457f/packages/lexical/src/LexicalSelection.ts#L2250). If it is the intended behavior, I suggest the naming to be changed to `$selectFirstPosition`.
To me, I believe `$createRangeSelection` should accept couple of options that specifies the key, type and offset for both anchor and focus, to make it more flexible and useful.

If there's another way to create a rangeSelection, please kindly instruct me. Thank you.

Start at packages/lexical/src/LexicalSelection.ts around line 2250 and inspect $createRangeSelection. Clarify whether the intended change is renaming it to $selectFirstPosition or adding key, type, and offset options for both anchor and focus. Done requires an agreed API and defined behavior for creating both positions.

Written by the indexing model from the issue text.