Add a check for tables with BLOB [schemacrawler]

[mfvanek]

See similar check https://www.schemacrawler.com/lint.html

• Linter: schemacrawler.tools.linter.LinterTooManyLobs
  Checks for tables that have too many large objects (CLOBs or BLOBs), since these could result in additional reads when returning query results.

See article https://www.enterprisedb.com/postgres-tutorials/postgresql-toast-and-working-blobsclobs-explained

Wee need to find all tables with oid column types:

CREATE TABLE imageslo (imgname text, imgoid oid);

It's better to use text/bytea types