Feature request: toggle boolean value using increment/decrement shortcuts

[aral]

Describe your feature request

If the token under the cursor(s) is a boolean true or false, toggle its value when the increment or decrement commands are issued.

[A-Walrus]

This should probably support both capitalized True / False (like in Python), lowercase true / false (like in Rust), and uppercase TRUE / FALSE (like in COBOL)