Add tasks for all the new languages

Task/Send-an-unknown-method-call/Lasso/send-an-unknown-method-call.lasso

@@ -0,0 +1,11 @@
+define mytype => type {
+	public foo() => {
+		return 'foo was called'
+	}
+	public bar() => {
+		return 'this time is was bar'
+	}
+}
+local(obj = mytype, methodname = tag('foo'), methodname2 = tag('bar'))
+#obj->\#methodname->invoke
+#obj->\#methodname2->invoke

Task/Send-an-unknown-method-call/Lingo/send-an-unknown-method-call.lingo

@@ -0,0 +1,5 @@
+obj = script("MyClass").new()
+-- ...
+method = #foo
+arg1 = 23
+res = call(method, obj, arg1)

Task/Send-an-unknown-method-call/Oforth/send-an-unknown-method-call-1.oforth

@@ -0,0 +1 @@
+16 "sqrt" asMethod perform

Task/Send-an-unknown-method-call/Oforth/send-an-unknown-method-call-2.oforth

@@ -0,0 +1 @@
+16 "sqrt" Word find perform

Task/Send-an-unknown-method-call/Sidef/send-an-unknown-method-call.sidef

@@ -0,0 +1,11 @@
+class Example {
+    method foo(x) {
+        42 + x
+    }
+}
+
+var name = 'foo'
+var obj = Example()
+
+say obj.(name)(5)          # prints: 47
+say obj.method(name)(5)    # =//=