Fixed a lot of bugs

* Fixed ByRef variables of defined types causing crashes
* Fixed ArrayDim causing crashes with members of types
* Added parent references to number and string values for use with ByRef
* Added TypeArrayDim
* Added the ability to use custom types in embedded functions
* Added the ability to create types in embedded_functions.bas
* Added new output file for embedded (rcbasic_dev4.txt) that will output code to generate types
* Added defined types to byref exceptions

rcbasic_build/rcbasic_dev4.txt

@@ -0,0 +1 @@
+create_type("empty");