check database name when collect schemas

[maetx777]

When collecting table schemas, we must check selectel database name to avoid conflicts with multiple cloned databases. For example, you can create database foo, clone it to foo_dev, set the same login/password to both databases and then try to generate structs, after code generation you can see conflicts.

[cdz620]

better gen tool: https://github.com/go-gorm/gen