Open picker when the app is launched

[franciscolourenco]

Is your feature request related to a problem? Please describe. Currently, when Pika is launched in Dock mode, the color picker windows doesn't automatically open. It is necessary to click on the dock icon a second time. Use-case: I would like to open the app, use it and close it, without having to run it permanently in the background.

Describe the solution you'd like I would like for Pika to automatically show the color picker when it is launched, at least when in Dock mode.