CoralVM-PHP: Added utility method to ConstantToken to detect constant names
CoralVM-PHP: Updating tokenizer to support more types

Added support for alias (partial – now only in type block), enum, record, union, range. Enum support is not implemented completely, as there is no check for the correct contents of the enumeration block and probably functions would not be possible to be defined in it in the correct context. Almost the same applies to the other new types.
CoralVM-PHP: Adding test script for types
CoralVM-PHP: Bugfix: Symbols that contained a capital letter were not recognized

Since symbols may represent also class and constant names, they must support capital letters as well.
CoralVM-PHP: Bugfix: Fixing html output of string literal tokens
CoralVM-PHP: Updating tokenizer to support metaclass opening class keywords
CoralVM-PHP: Updating tokenizer to support bitfield enums