Blender Git Loki

Geometry Nodes: Add explicit Float to Int conversion node

This patch adds a very simple node that explicitly converts a float to
an int. While this may seem redundant, it would offer 2 benefits to the
current requirement to use implicit float conversions:
1. It makes the node tree's intent more clear and self-documenting
(especially if changes in the future require integer inputs).
2. It eliminates undefined behavior in current/future nodes from float
inputs by guaranteeing that the input is an integer.

The node offers a variety of rounding techniques to make it more flexible.

Differential Revision: https://developer.blender.org/D11700