feat: Turtle Minimum Vector ( Fixes #276 )

Author: StartAutomating

Types/Turtle/get_Minimum.ps1

@@ -1,4 +1,15 @@
-if ($this.'.Minimum') {
-    return $this.'.Minimum'
+<#
+.SYNOPSIS
+    Gets a Turtle's lowest point
+.DESCRIPTION
+    Gets the minimum vector for this turtle.  
+    
+    This would the lowest point that the turtle has visted.
+#>
+[OutputType([Numerics.Vector2])]
+param()
+if (-not $this.'.Minimum') {
+    $this | Add-Member NoteProperty '.Minimum' ([Numerics.Vector2]::new(0,0)) -Force
 }
-return ([pscustomobject]@{ X = 0; Y = 0 })
+
+return $this.'.Minimum'