Added lexars

lexers/testdata/vala.actual

@@ -0,0 +1,42 @@
+class HelloWorld: Object {
+
+    public signal void some_event ();
+
+    public void method () {
+        some_event ();
+    }
+    
+    struct Vector {
+        public double x;
+        public double y;
+        public double z;
+    }
+
+    enum WindowType {
+        TOPLEVEL,
+        POPUP
+    }
+
+    private uint year = 0;
+
+    public HelloWorld () {
+    }
+
+    public HelloWorld.with_year (int year) {
+        if (year>0)
+            this.year = year;
+    }
+
+    public void greeting () {
+        if (year == 0)
+            print ("Hello World\n");
+        else
+            /* Strings prefixed with '@' are string templates. */
+            print (@"Hello World, $(this.year)\n"); 
+    }
+}
+
+void main (string[] args) {
+    var helloworld = new HelloWorld.with_year (2021);
+    helloworld.greeting ();
+}