fix: pin button tooltip is disabled when ontop_in_topbar activates

[Samillion]

Changes:

• Fix pin button tooltip, when ontop_in_topbar=yes then pin/unpin, the tooltip was lost
• Add windowcontrols_ontop to state
• Remove unused playlist_loop state
• Remove ontop_in_topbar state
  • Use direct window controls, ontop state, and user options check instead
• Add make_escaped_title() helper to reduce code repetition
• Eliminate redundancy with inline logic checks
  • All of them had values already assigned in initiation, so they will never be nil
• Replace check on tooltip_hints from empty string to nil
• Draw tooltip if it's not nil, instead of it's not empty string