feat: Turtle.FontFamily ( Fixes #354, Fixes #377 )

Author: StartAutomating

Types/Turtle/get_FontFamily.ps1

@@ -0,0 +1,13 @@
+<#
+.SYNOPSIS
+    Gets the font family
+.DESCRIPTION
+    Gets the font family of the Turtle, if one has been set.
+
+    If no font family has been set, this returns nothing.
+.EXAMPLE
+    turtle fontfamily 12 fontfamily
+.LINK
+    https://developer.mozilla.org/en-US/docs/Web/SVG/Reference/Attribute/font-family
+#>
+$this.TextAttribute.'font-family'

Types/Turtle/set_FontFamily.ps1

@@ -0,0 +1,15 @@
+<#
+.SYNOPSIS
+    Sets the font family
+.DESCRIPTION
+    Sets the font family of the Turtle.
+
+    Any input is acceptable, but it may not be valid.
+    
+    Invalid input will be ignored.
+.LINK
+    https://developer.mozilla.org/en-US/docs/Web/SVG/Reference/Attribute/font-family
+.EXAMPLE
+    turtle fontfamily sans-serif fontfamily
+#>
+$this.TextAttribute = @{'font-family'= $args }