Add reverse toggle action

[Simon van Noort]

As requested by a review on the JetBrains marketplace.

It would be beneficial to include shortcuts for shuffling items up and down. When dealing with numerous suggestions, navigating through them becomes more convenient by moving both upward and downward.

This could be implemented as a simple reverse toggle action.

The current shortcut for the toggle action is Ctrl/Cmd+Shift+X. Using an additional modifier (e.g., Alt/Opt) for the reverse action might make it cumbersome to activate. However, I'll likely go with that for now anyway (so it will be Ctrl/Cmd+Shift+Alt/Opt+X). Better keybind suggestions (which do not conflict with the default IDE's keybinds) are very much welcome!

[Simon van Noort]

Implemented as per:

• #58

The new update is available here as a release, and will be released after approval on the marketplace in about 2 business days.

[Timur Prokopiev]

Thank you for undertaking this task. It greatly streamlines the use of the dictionary, and I am extensively utilizing it. I'm really pleased that you took the initiative.