Use sqlite_schema instead of sqlite_master in SchemaResolver

[pawelsalawa]

In version 3.33.0 the sqlite_master (and *_temp_* variation of it) was renamed to sqlite_schema (and the temp one too). Still the master variation is accepted as alias, but it may be confused to some users.

When SchemaResolver is configured to return system tables too, it should return by default the sqlite_schema. Using "master" should be an option in configuration (where system tables visibility is configured).

https://sqlite.org/schematab.html