Add tasks for all the new languages

Task/Collections/Wren/collections.wren

@@ -0,0 +1,16 @@
+var list = [] // Empty Array
+list = [1,2,3,4]
+list.add(5)
+list.clear()
+list = [0] * 10
+list.count // 10
+
+var map = {}
+map["key"] = "value"
+map[3] = 31
+map.count // 2
+map.clear()
+
+for (e in map.keys) {
+    // Do stuff
+}