Support AND operator between all the tags used for running journeys locally

[gsantoro]

Currently, when I use the following command

npx @elastic/synthetics journeys --tags tag1 --tags tag2

the synthetics cli will run all the journeys with tag tag1 and those with tag tag2. In other words, the OR operator between those tags filters all the journeys to run.

We would like to have way to only run the journeys that are tagged with tag tag1 AND tag tag2, thus implementing the AND operator instead.

Hopefully both OR and AND operator will be implemented and documented.