Double tap support

[aliaksandrsen]

Description:

It would be very useful to support triggering actions via a double-tap on a single key (for example, pressing a key twice quickly).

This interaction pattern is already familiar to users on macOS. For instance, system dictation can be activated by double-pressing the right Command key. This makes the feature intuitive and aligns with existing OS-level behavior.

Use case:

Quick activation of Handy without occupying additional complex shortcuts
Reduced cognitive load compared to multi-key combinations
Better ergonomics for frequent actions

Suggested behavior:

Allow users to bind an action to a double-tap of a specific key
Configurable timing threshold for what counts as a "double tap"
Support for modifier keys as well (e.g. Command, Option, etc.)

Example:

Double-tap Right Command → trigger Handy

This would significantly improve usability, especially for users who prefer minimal and fast keyboard interactions.