Add tasks for all the new languages

Task/Metaprogramming/Sidef/metaprogramming-2.sidef

@@ -0,0 +1,20 @@
+var colors = Hash(
+               'black'   => "000",
+               'red'     => "f00",
+               'green'   => "0f0",
+               'yellow'  => "ff0",
+               'blue'    => "00f",
+               'magenta' => "f0f",
+               'cyan'    => "0ff",
+               'white'   => "fff",
+             )
+
+colors.each { |color, code|
+    String.def_method("in_#{color}", func (self) {
+        '<span style="color: #' + code + '">' + self + '</span>'
+    })
+}
+
+say "blue".in_blue;
+say "red".in_red;
+say "white".in_white;