Adding infrastructure for normalizing SyGuS grammars (#1397)

Adding infrastructure for normalizing SyGuS grammars (#1397)

* minor

Using string previously computed

* adding option

* starting module for simplifying grammars

* more

* more

* fix

* fix

* fix

* fix

* fix

* removing unused command

* removing unused command

* removing unnecessary quantifier engine

* adding lambda support

* transient

* reverting changes

* starting normalization of integers

* removing unnecessary objects

* using for_each

* rebuilding given datatypes

* recrating types as given

* bug fixing

* minor

* reverting space changes

* addressing review

* addressing review