SHOW USERS LIKE/NOT LIKE

### Company or project name

ClickHouse

### Use case

`SHOW USERS NOT LIKE '%-internal'`

### Describe the solution you'd like

Implement it for USERS and also for all similar SHOW statements.

### Describe alternatives you've considered

_No response_

### Additional context

_No response_

Start by locating the parser and execution entry points for SHOW USERS and compare them with similar SHOW statements. Verify support for both LIKE and NOT LIKE patterns, then check that the behavior is consistent across the related SHOW statements and that the requested example works.

Written by the indexing model from the issue text.