entry progressbar fix
  - set transparent bg to the progress component
entry progressbar fix
  - set transparent bg to the progress component in backdrop state too
progressbar fix
  - removed box-shadow from backdrop state
GtkSwitch fix
  - removed box-shadow from the insensitive switch slider
assets work
  - recolored check and radio to follow our visual language more
    closely, only bright variant for now
:selected state for checkboxes and radios

- all fine and great... except none of this works.
:selected check and radio: add png assets
check radio :selected missing assets added to gresource
view: selection block color
linked entry
  - axe left border of :last-child istead of the right one on :first-child
linked buttons
  - flipped the logic, use border-style istead of border-width to
    remove borders so it works indipendently with whatever border width
    set
  - same on the combobox-entry
rtl fix
  - flipped horizontal spinbutton button borders in rtl
rtl fixes
  - flipped linking logic for buttons in rtl
  - rewrote the combobox entry section using dir(rtl)