Improve CESQL LIKE expression implementation

[Cali0707]

Currently, the CESQL LIKE expressions build and then evaluate a regex. Since LIKE is a very strict subset of the possible matches one can do with regex, we can implement a more efficient algorithm for LIKE matching.

[Cali0707]

@duglin can you assign this to me?

[Cali0707]

This was resolved in https://github.com/cloudevents/sdk-go/pull/1049