feat: Turtle.Clear() steps and Turtles ( Fixes #223, Fixes #224 )

Author: StartAutomating

Types/Turtle/Clear.ps1

@@ -1,7 +1,18 @@
+<#
+.SYNOPSIS
+    Clears a Turtle
+.DESCRIPTION
+    Clears the heading, steps, position, minimim, maximum, and any nested Turtles.
+.EXAMPLE
+    turtle square 42 clear circle 21
+#>
 $this.Heading = 0
-$this.Steps = @()
+if ($this.Steps.Clear) {
+    $this.Steps.Clear()
+}
 $this | Add-Member -MemberType NoteProperty -Force -Name '.Position' -Value ([pscustomobject]@{ X = 0; Y = 0 })
 $this | Add-Member -MemberType NoteProperty -Force -Name '.Minimum' -Value ([pscustomobject]@{ X = 0; Y = 0 })
 $this | Add-Member -MemberType NoteProperty -Force -Name '.Maximum' -Value ([pscustomobject]@{ X = 0; Y = 0 })
 $this.ViewBox = 0
+$this.Turtles.Clear()
 return $this