Stop using the colorpicker dialog in the colorpalette widget.
Integrate the colorpicker widget in the colorpalette widget. Of course,
the colorpicker behaviors are adapted so that no useless rerendering
of the colorpalette is made on each value change.
The 'reset color' button is now a button like the other colors, no need
for a 'color_reset' event anymore. It is removed and replaced with a
'color_picked' event with color being an empty string. The clear button
now also work on hover.
Also, the topbar colorpalette for text and text background colors now
has the exact same behaviour as the background colorpalette: adding
color preview on hover.
The colorpalette now also closes on 'enter' keypress.
Part of https://github.com/odoo/odoo/pull/46088
task-2195313
closesodoo/odoo#46088
Related: odoo/enterprise#8696
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>