feat: Turtle.get_Pattern ( Fixes #18 )

Author: James Brundage

Types/Turtle/get_Pattern.ps1

@@ -0,0 +1,14 @@
+param()
+@(
+$viewX = [Math]::Max($this.Maximum.X, $this.Minimum.X * -1)
+$viewY = [Math]::Max($this.Maximum.Y, $this.Minimum.Y * -1)
+"<svg xmlns='http://www.w3.org/2000/svg' width='100%' height='100%'>"
+"<defs>"
+    "<pattern id='turtle-pattern' patternUnits='userSpaceOnUse' width='$viewX' height='$viewY' transform-origin='50% 50%'>"
+        "<path id='turtle-path' d='$($this.PathData)' stroke='$(
+            if ($this.Stroke) { $this.Stroke } else { 'black' }
+        )' fill='transparent'/>"
+    "</pattern>"
+"</defs>"
+"<rect width='10000%' height='10000%' x='-5000%' y='-5000%' fill='url(#turtle-pattern)' />"
+"</svg>") -join '' -as [xml]