Split off from D9054
This patch adds a "Blend To Neighbour" Operator to the pose sliding tools.
When animating you often want to nudge your current pose to the neighbouring poses slightly.
The breakdowner would override the current pose completely, whereas this operator blends from the current pose.
There is a menu entry for the new operator. It is also registered under the ALT + SHIFT + E hotkey
{F8965044}