Complete grammar type generation to support parser generators for other languages

[jsinger67]

Currently the GrammarTypeInfo only contains necessary information to enable parol's own parser generation.
The goal here is to provide all information via GrammarTypeInfo to be able to feed other generators, e.g., to generate any kind of interfacing with parol or completely other languages.

[jsinger67]

Fixed along with intruduction the min-box functionality (ac964f7).
The grammar type information now contains a lot more details that could be usefull for other generators like the one suggested by @ryo33 Type-agnostic AST generator.

Re-open this issue in case of found bugs or missing details.

Also please consider a type browser such as parsym to easily browse the grammar type information.