[FEATURE] Registering SCAN, EVAL, EXEC parameters for 'StackExchange.Redis' spans

[grietine]

With #1364 feature the parameters were registered for GET, SET, SETEX commands.

TODO:

• Add parameters which are used for SCAN, EVAL, EXEC commands (or any other missed to implement commands).

Current:
Redis span.db.statement:
SCAN

Expected:
Redis span.db.statement:
SCAN MyKeyPattern*