Add support for and emulate CREATE OR REPLACE MATERIALIZED VIEW and other objects

[lukaseder]

Only Snowflake supports CREATE OR REPLACE MATERIALIZED VIEW it seems (see #9483), but it would be useful everywhere else as well. We have an emulation for OR REPLACE for PROCEDURE and FUNCTION, which is MySQL specific. Perhaps we can refactor this to be more useful, similar to the IF [ NOT ] EXISTS anonymous block emulations. The emulation would simply run a DROP .. IF EXISTS before. This would be done for other object types as well.

• Add API support
• Add parser support
• Add interpreter support
• Add implementation support
  • native
  • emulated, later: Add emulation support for CREATE OR REPLACE MATERIALIZED VIEW #15746