[Feature] Support SQL string composition

The redshift connector currently supports parameterised queries (aka bind variables) which is great.

However some of our use cases require other parts of a Redshift SQL query to be dynamically created. These include components such as the table name, the schema... and are commonly referred to as Identifiers. For example ``` f"SELECT * FROM {schema}.{table}"```

Other libraries such as [pg8000](https://github.com/tlocke/pg8000#many-sql-statements-can-t-be-parameterized) and [psycopg](https://www.psycopg.org/docs/sql.html) have developed modules to escape these variables via identifiers.

Beyond usability, the main advantage of this approach is that it helps with SQL injection attacks.