[spark] Introduce View Support to SparkCatalog

[Zouxxyy]

Purpose

To #4496, implement the following basic view usages for SparkCatalog:

CREATE VIEW v xxx;
CREATE OR REPLACE VIEW v xxx; -- non-atomic, just drop then create
SHOW VIEWS;
SHOW VIEWS LIKE '';
SELECT FROM view;

Tests

API and Format

Documentation

[JingsongLi]

Good job!

[JingsongLi]

Thanks @Zouxxyy