Convert engine types through CultMath.UnityBridge

CultMath has no implicit conversions to or from Vector*, Quaternion or
Color, so Assembly-CSharp converts explicitly with ToCultMath/ToUnity at
each engine boundary: FieldDriver, GuidedProjectile(Manager),
EntityInstance, ActionGameManager, HullCollider, GridObject, ShipInstance,
ShieldManager, ItemPickup, FieldTester, PlaceUIElementWorldspace,
MapMenuInput, MapRenderer, SectorRenderer and ZoneRenderer. CultMath math
calls that were handed Unity vectors now take converted values;
Vector3.Scale in FieldDriver becomes a float3 product, and ItemPickup's
Vector3.Dot on float3s becomes dot. packages-lock.json records the
cultmath git package at f0605367 and demotes com.unity.mathematics to a
transitive dependency.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Packages/packages-lock.json

@@ -126,7 +126,7 @@
     },
     "com.unity.mathematics": {
       "version": "1.3.3",
-      "depth": 0,
+      "depth": 1,
       "source": "registry",
       "dependencies": {},
       "url": "https://packages.unity.com"
@@ -242,6 +242,13 @@
       },
       "url": "https://packages.unity.com"
     },
+    "org.gamecult.cultmath": {
+      "version": "https://github.com/GameCult/CultLib.git?path=/packages/cultmath/unity/org.gamecult.cultmath#cultmath-unity-v0.2.1",
+      "depth": 0,
+      "source": "git",
+      "dependencies": {},
+      "hash": "f0605367e0d7e57941a57bacb0b8cb8d893073be"
+    },
     "com.unity.modules.accessibility": {
       "version": "1.0.0",
       "depth": 0,