Some last minute tweaks on operations

Exists and forall for optional and nullable types

Make new nullability for Option

Let table be constructed from MapRes

Add back option types

Add JdbcCodec to JdbcAnsiTypes

Some cleanups and improvements for operations syntax

Add queryable typeclass as shorthand for apply traverse

Fully remove NNA from Nullability. Make a better place for nullable ops

Switch to using union types with singleton value for nulls

Update perspective to 0.3.0

Test fixes, array agg, docs

All tests pass

Scalafmt

Tests for arrays