Add $DOES_NOT_CONTAIN operator

[mainak55512]

Add a new $DOES_NOT_CONTAIN operator to query if a field does not contain specific keywords or not, e.g. the query should be like name $DOES_NOT_CONTAIN 'Alex' which should give all that names that does not contain the word 'Alex'.

This operator should work on the following:

String: will check if string doesn't have a certain sub-string or not.

Array: will check if that array doesn't contain a specific element or not.