wip:

Add type system and refator for having only epression

examples/test_example.lox

@@ -4,7 +4,7 @@
 //     address: String,
 // }
 //func_name :: fn(param: Number, param2: String) {param is Int}  do
-func_name :: fn(param: Int, param2: String) do
+func_name :: fn(param: Int, param2: String): Any do
     print param;
     print param2;
     while param < param2 do
@@ -26,6 +26,6 @@ func_name :: fn(param: Int, param2: String) do
     end
 
     return False or True;
-end
+end;
 
-func_name(1,20)
+func_name(1,20);