Add DataWeave language (#3804)

* Add DataWeave language

* Add Licence

* Update to latest DataWeave revision

samples/DataWeave/match.dwl

@@ -0,0 +1,33 @@
+{
+  // Regex Pattern Matching (Can be named or unnamed)
+  a: in0.phones map $ match {
+    case matches /\+(\d+)\s\((\d+)\)\s(\d+\-\d+)/ -> { country: $[0], area: $[1], number: $[2] }
+    case matches /\((\d+)\)\s(\d+\-\d+)/ -> { area: $[1], number: $[2] }
+    case phone matches /\((\d+)\)\s(\d+\-\d+)/ -> { area: phone[1], number: phone[2] }
+  },
+  // Type Pattern Matching (Can be named or unnamed)
+  b: in0.object match {
+    case is Object -> { object: $ }
+    case is Number -> { number: $ }
+    // This is how you name variables if needed
+    case y is Boolean -> { boolean: y }
+  },
+  // Literal Pattern Matching (Can be named or unnamed)
+  c: in0.value match {
+    case "Emiliano" -> { string: $ }
+    case 123 -> { number: $ }
+    // This is how you name variables if needed
+    case value: "Mariano" -> { name: value }
+  },
+  // Boolean Expression Pattern Matching (Always named)
+  d: in0.value match {
+    case x if x > 30 -> { biggerThan30: x }
+    case x if x == 9 -> { nine: x }
+  },
+  // Default matches
+  e: in0.value match {
+    case "Emiliano" -> "string"
+    case 3.14 -> number
+    else -> "1234"
+  }
+}