Malkorok Healbot Shield

Add-on designed to show malkorok shields directly on the healbot raid frame.

A bit ugly, meant to be functionnal for one boss. But if needed, I'll fix the display.

Commands
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/mhb test    Preview red, orange, green and overflow values on current HealBot frames.
/mhb on      Enable the overlay.
/mhb off     Disable it.
/mhb always  Toggle total absorbs outside Malkorok.
/mhb text    Toggle the numerical label.
/mhb detailed Toggle between percentage-only and absorb amount + percentage.
/mhb debug   Print the hovered player's total absorbs and encounter aura details.