feat: model PostgreSQL table inheritance references

[minleejae]

Parse PostgreSQL INHERITS parents as ordered Table references, including schema-qualified and quoted names. This makes inherited dependencies visible to table-name discovery and editable through the AST.

Share inheritance rendering between toString and CreateTableDeParser, reuse TableDefinitionTraversal for parent references, and retain explicit empty column definitions such as CREATE TABLE child () INHERITS (parent).

Validation:

• Full Gradle check passed (Java 17), including grammar ambiguity, unit tests, coverage, formatting, Checkstyle, PMD, and SpotBugs.
• PostgreSQL 17.11 accepted multiple parents and inherited defaults; original and rendered SQL produced the same columns and values.
• Added AST, mutation, and parse/deparse regression coverage.

Syntax reference: official documentation.

Additional version-boundary validation: the original, toString, and deparser SQL was executed on PostgreSQL 18.6, including the focused behavioral cases. Reviewed the PostgreSQL 18 grammar. Runtime version numbers above identify the tested binaries; this does not claim support for every statement in those DBMS versions.

[manticore-projects]

Please resolve conflicts.

[manticore-projects]

Thank you much. Although I wonder when GitHub will kick us out based on the volume of changes you are crafting :-D