[Feature] Added `Flow` `match_id` attribute for efficient overlapping matches updates

[viniarck]

Description of the change

Release notes

• Added match_id attribute on Flow as a unique match identifier for efficient overlapping matches updates, minimizing extra DB lookups that would be needed otherwise.
• Match OF10 as_dict to only included explicit set values.

This picture illustrates a POST /api/kytos/flow_manager/v2/flows/ on flow_manager (that's in progress on https://github.com/kytos-ng/flow_manager/issues/75), by leveraging this match_id there's a single update, minimizing DB round trips when inserting or updating a flow, minimizing locks and delegating as much to Mongo whenever applicable

I wasn't going to support OF10 either on this attribute, since we have mapped the issues to deprecate it, but since we haven't yet and the fix was simple I committed it. We can drop OF1.0 on issue #50 .

[viniarck]

Thanks for reviewing @ajoaoff @italovalcy