Rename package and address warnings

Sources/SwiftUIMath/MathRender/MTConfig.swift

@@ -0,0 +1,40 @@
+import Foundation
+
+//
+//  Created by Mike Griebling on 2022-12-31.
+//  Translated from an Objective-C implementation by 安志钢.
+//
+//  This software may be modified and distributed under the terms of the
+//  MIT license. See the LICENSE file for details.
+//
+
+#if os(iOS) || os(visionOS)
+
+import UIKit
+
+public typealias MTView = UIView
+public typealias MTColor = UIColor
+public typealias MTBezierPath = UIBezierPath
+public typealias MTLabel = UILabel
+public typealias MTEdgeInsets = UIEdgeInsets
+public typealias MTRect = CGRect
+public typealias MTImage = UIImage
+
+let MTEdgeInsetsZero = UIEdgeInsets.zero
+func MTGraphicsGetCurrentContext() -> CGContext? { UIGraphicsGetCurrentContext() }
+
+#else
+
+import AppKit
+
+public typealias MTView = NSView
+public typealias MTColor = NSColor
+public typealias MTBezierPath = NSBezierPath
+public typealias MTEdgeInsets = NSEdgeInsets
+public typealias MTRect = NSRect
+public typealias MTImage = NSImage
+
+let MTEdgeInsetsZero = NSEdgeInsets.init(top: 0, left: 0, bottom: 0, right: 0)
+func MTGraphicsGetCurrentContext() -> CGContext? { NSGraphicsContext.current?.cgContext }
+
+#endif