New Creates a new instance of Queries.

NewStore creates a new SQLStore instance for the project.

Queries holds the DBTX interface in it, which consist of the database/sql functions we need.

SQLStore provides all DB functions by implementing the Queries struct in it.

DBTX implements the database/sql functions we need.

Querier implements the DB function we wrote for the project.

Store provides all DB functions we created, this interface also lets us create a mock store.