Graph View - Checkbox property not coloured in group colours

[WhiteNoise]

Properties: Support searching for Boolean/Checkbox state like [completed:true]

Add support in the query engine for searching notes based on Checkbox properties (Boolean) state (true/false). Example [completed:true] or [completed:false] Right now (Obsidian V1.4.13), only text (string) and list (of strings) are supported. Related FR: