Add tasks for all the new languages

Task/Boolean-values/Lasso/boolean-values-1.lasso

@@ -0,0 +1,11 @@
+!true
+// => false
+
+not false
+// => true
+
+var(x = true)
+$x // => true
+
+$x = false
+$x // => false

Task/Boolean-values/Lasso/boolean-values-2.lasso

@@ -0,0 +1,7 @@
+local(x = string)
+// size is 0
+#x->size ? 'yes' | 'no'
+
+local(x = '123fsfsd')
+// size is 8
+#x->size ? 'yes' | 'no'