Add Opsive SDK detection rules

[JustinMosiman]

Add Opsive SDK detection rules

Summary

Adds filename detection for five Opsive Unity product families:

• Behavior Designer
• Behavior Designer Pro, including the current Pro 3 assembly layout
• State Designer
• Ultimate Character Controller
• Ultimate Inventory System

The rules match exact, anchored runtime assembly filenames. BehaviorDesigner.dll is included as a historical Behavior Designer filename observed in a public Steam depot; the other rules use product-specific Opsive.* runtime assembly names.

Public depot evidence

• Behavior Designer: BehaviorDesigner.Runtime.dll in Get To Work
• Historical Behavior Designer filename: BehaviorDesigner.dll in SWORD BISTRO VR
• Behavior Designer Pro: Opsive.BehaviorDesigner.Runtime.Systems.dll in Delivery & Beyond
• Ultimate Character Controller: Opsive.UltimateCharacterController.dll in Dezzan
• Ultimate Inventory System: Opsive.UltimateInventorySystem.dll in Little Kitty, Big City

State Designer's signatures are based on the product-specific runtime assemblies shipped in the publisher package. I do not yet have a public depot example for State Designer.

Validation

• Added positive tests for every signature.
• Added near-miss strings to _NonMatchingTests.txt.
• Ran php tests/Test.php: all tests passed.