Simplify Bezier-rs using poly-cool as the root finder (#3031)

* Convert tangents_to_point

* Convert normals_to_point

* Port over roots and project

* Remove symmetrical_basis

* Code style nits

---------

Co-authored-by: Keavon Chambers <keavon@keavon.com>

Cargo.lock

@@ -468,6 +468,7 @@ dependencies = [
  "dyn-any",
  "glam",
  "kurbo",
+ "poly-cool",
  "serde",
 ]
 
@@ -4042,6 +4043,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2f3a9f18d041e6d0e102a0a46750538147e5e8992d3b4873aaafee2520b00ce3"
 
+[[package]]
+name = "poly-cool"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d6113ca52ade3ae52044cf0519e2c78ffa82120f6fa82f5099c8a4fd3ec8de43"
+dependencies = [
+ "arrayvec",
+]
+
 [[package]]
 name = "portable-atomic"
 version = "1.11.1"