ColorPicker related issues

[generalloki]

Here we collect ColorPicker related issues.

We need to implement more features from wxColourPickerCtrl https://docs.wxwidgets.org/3.2/classwx_colour_picker_ctrl.html

• wxCLRP_DEFAULT_STYLE: The default style: 0.
• wxCLRP_USE_TEXTCTRL: Creates a text control to the left of the picker button which is completely managed by the wxColourPickerCtrl and which can be used by the user to specify a colour (see SetColour). The text control is automatically synchronized with button's value. Use functions defined in wxPickerBase to modify the text control.
• wxCLRP_SHOW_LABEL: Shows the colour in HTML form (AABBCC) as colour button label (instead of no label at all).
• wxCLRP_SHOW_ALPHA: Allows selecting opacity in the colour-chooser (effective under wxGTK and wxOSX).

[generalloki]

WxColorPickerCtrl is not good enough, so I beleive we need other color editor and this one should not be improved anymore. So for now I close this issue.