Format CREATE TABLE DDL and add DDL parsing helpers

Normalized profile

What this task asks for

Format CREATE TABLE statements with DDL-aware line breaking and add parsing models for table columns and constraints. Format CREATE TABLE bodies with the opening parenthesis after the table name and the closing parenthesis at depth zero. Put each column or table constraint on its own indented line with commas between items and no trailing comma. Keep nested types, inline constraints, table constraints, and post-body clauses on their required single lines. Lowercase DDL keywords and type names and place the terminating semicolon on its own depth-zero line. Leave CREATE TABLE AS SELECT and CREATE TABLE LIKE statements unchanged. Add value-comparable DDL model classes and a parser that reconstructs types and collects every table-level constraint.