Fix bug in assigment of PK constraints & creation of associated index

[mamcx]

Description of Changes

..and upgrade SQL parsing.

Now this syntax is correctly parsed:

CREATE TABLE e (inventory_id BIGINT GENERATED BY DEFAULT AS IDENTITY); --Identity
CREATE TABLE d (inventory_id BIGINT PRIMARY KEY); --PrimaryKey
CREATE TABLE f (inventory_id BIGINT PRIMARY KEY GENERATED BY DEFAULT AS IDENTITY); --PrimaryKeyAuto

API

• This is a breaking change to the module API
• This is a breaking change to the ClientAPI

If the API is breaking, please state below what will break

[RReverser]

The line I was concerned about looks good, but I'm not sure I'm qualified to review the rest 😅