caddoo

### Description: We've added 'disableCampaignParameters' and 'enableCampaignParameters' to the tracking API scheduled for release in `5.1.0` ### Review * [ ] [Functional review done](https://developer.matomo.org/guides/pull-request-reviews#functional-review-done) * [ ] [Potential edge cases...

Add feature flags plugin w/ config implementation and example feature

1

### Description: This contains the following: - Feature flag plugin for core - Single implementation of feature flag storage which is in the configuration file - A manager that supports...

### Description: Please include a description of this change and which issue it fixes. If no issue exists yet please include context and what problem it solves. ### Review *...