Add DataWeave language (#3804)

* Add DataWeave language

* Add Licence

* Update to latest DataWeave revision

samples/DataWeave/literals.dwl

@@ -0,0 +1,36 @@
+%dw 2.0
+---
+{
+  "boolean":{
+    "true" : true,
+    "false": false
+  },
+  "Number": {
+    "int": 123,
+    "decimal": 123.23
+  },
+  "string": {
+    "singleQuote" : 'A String',
+    "doubleQuote" : "A String"
+  },
+  "regex": /foo/,
+  "date": {
+    a: |2003-10-01|,
+    b: |2005-045|,
+    c: |2003-W14-3|,
+    d: |23:57:59|,
+    e: |23:57:30.700|,
+    f: |23:50:30Z|,
+    g: |+13:00|,
+    h: |Z|,
+    i: |-02:00|,
+    j: |2005-06-02T15:10:16|,
+    k: |2005-06-02T15:10:16Z|,
+    l: |2005-06-02T15:10:16+03:00|,
+    m: |P12Y7M11D|,
+    n: |P12Y5M|,
+    o: |P45DT9H20M8S|,
+    p: |PT9H20M8S|
+  }
+}
+