Type-safe access for AnimationTree

[CSharpKun]

The SGs are great, but I really want to have a typed access to AnimationTree, specifically the Parameters, because currently it relies on .Get(), .Set() and .As() methods, and those are really unsafe.

Currently it works like this (BlendSpace2D inside StateMachine as an example):

// Setting blend_position of BlendSpace2D named "Idle"
AnimTree.Set("parameters/Idle/blend_position", direction);

// Setting some_condition to true
AnimTree.Set("parameters/conditions/some_condition", true);

And the wanted behaviour is something like this:

AnimTree.Parameters.Idle.BlendPosition = direction;
AnimTree.Parameters.Conditions.SomeCondition = true;

I could probably try to write it myself, though I don't have experience in creating SGs.
Wanted to know your opinions on the topic.