Automatically determine SQL column type from the field.

Also add more column types to ensure we are storing data in the
best format in the database.

data/modules.example.conf

@@ -755,7 +755,7 @@ module { name = "sasl" }
 		name = "sqlite/main"
 
 		/* The database name, it will be created if it does not exist. */
-		database = "anope.db"
+		database = "anope.sqlite"
 	}
 }