added Ansi class

src/util/Ansi.scala

@@ -0,0 +1,19 @@
+package util
+
+object Ansi {
+  val ESC: String = "\u001b["
+  val CLEAR: String = code("0")
+  val BOLD: String = code("1")
+  val FAINT: String = code("2")
+  val ITALIC: String = code("3")
+  val UNDERLINE: String = code("4")
+  val SLOW_BLINK: String = code("5")
+  val RAPID_BLINK: String = code("6")
+  val REVERSE: String = code("7")
+  val CONCEAL: String = code("8")
+  val STRIKETHROUGH: String = code("9")
+  def FG_RGB(r: Int, g: Int, b: Int): String = code(s"38;2;$r;$g;${b}")
+  def BG_RGB(r: Int, g: Int, b: Int): String = code(s"48;2;$r;$g;${b}")
+
+  private def code(str: String): String = ESC+str+"m"
+}