Add tasks for all the new languages

Task/Abstract-type/Lasso/abstract-type.lasso

@@ -0,0 +1,21 @@
+define abstract_trait => trait {
+    require get(index::integer)
+
+    provide first()  => .get(1)
+    provide second() => .get(2)
+    provide third()  => .get(3)
+    provide fourth() => .get(4)
+}
+
+define my_type => type {
+    parent array
+    trait { import abstract_trait }
+
+    public onCreate(...) => ..onCreate(:#rest)
+}
+
+local(test) = my_type('a','b','c','d','e')
+#test->first  + "\n"
+#test->second + "\n"
+#test->third  + "\n"
+#test->fourth + "\n"