feat: Turtle.Left/Right() ( Fixes PoshWeb#47 )

Author: StartAutomating

Turtle.types.ps1xml

@@ -23,6 +23,10 @@
         <Name>fd</Name>
         <ReferencedMemberName>Forward</ReferencedMemberName>
       </AliasProperty>
+      <AliasProperty>
+        <Name>l</Name>
+        <ReferencedMemberName>Left</ReferencedMemberName>
+      </AliasProperty>
       <AliasProperty>
         <Name>pd</Name>
         <ReferencedMemberName>PenDown</ReferencedMemberName>
@@ -31,6 +35,10 @@
         <Name>pu</Name>
         <ReferencedMemberName>PenUp</ReferencedMemberName>
       </AliasProperty>
+      <AliasProperty>
+        <Name>r</Name>
+        <ReferencedMemberName>Right</ReferencedMemberName>
+      </AliasProperty>
       <AliasProperty>
         <Name>up</Name>
         <ReferencedMemberName>PenUp</ReferencedMemberName>
@@ -216,6 +224,22 @@ return $this
 
                     </Script>
       </ScriptMethod>
+      <ScriptMethod>
+        <Name>Left</Name>
+        <Script>
+                        &lt;#
+.SYNOPSIS
+    Turns the turtle left
+.DESCRIPTION
+    Turns the turtle left (counter-clockwise) by the specified angle.
+#&gt;
+param(
+[double]$Angle = 90
+)
+
+$this.Rotate($Angle * -1)
+                    </Script>
+      </ScriptMethod>
       <ScriptMethod>
         <Name>PenDown</Name>
         <Script>
@@ -247,6 +271,22 @@ $null = foreach ($n in 1..$SideCount) {
 return $this
                     </Script>
       </ScriptMethod>
+      <ScriptMethod>
+        <Name>Right</Name>
+        <Script>
+                        &lt;#
+.SYNOPSIS
+    Turns the turtle right 
+.DESCRIPTION
+    Turns the turtle right (clockwise) by the specified angle.
+#&gt;
+param(
+[double]$Angle = 90
+)
+
+$this.Rotate($Angle)
+                    </Script>
+      </ScriptMethod>
       <ScriptMethod>
         <Name>Rotate</Name>
         <Script>