'like' operator should default to 'ilike' for postgres

[circulon]

Thanks for fixing the like operator.

I just found out that Postgres has separate 'like' and 'ilike' operators (case-sensitive and case-insensitive respectively)

I would think that the grammar for 'like' and 'not like' in postgres default to 'ILIKE' and 'NOT ILIKE' as all other RDMS seem to have no distinction like this (no pun intended) and are all case-insensitive.

[josephmancuso]

Are you able to put this PR together?

This would just be a small text change on these 2 lines

https://github.com/MasoniteFramework/orm/blob/0.9/src/masoniteorm/query/grammars/PostgresGrammar.py#L69-L73

[circulon]

PR created fixing this issue
#272