**What**
- Adds new entity AnalyticsConfig
- Adds new service AnalyticsConfigService
- Adds new repository AnalyticsConfigRepository
- Adds new endpoints to get, create, update, and delete analytics configs
**Why**
As we begin gathering usage insights to help us improve Medusa, we want to give each individual users the ability to control what data they share with us, or not share any data with us at all. The AnalyticsConfig holds information that is used to check if the user wishes for their data to be anonymized or if they have opted out of sharing usage data.
The entire feature can be disabled on a store level by setting the feature flag `MEDUSA_FF_ANALYTICS=false` in their environment variables, the feature is enabled by default.
**Testing**
Adds integration test for each of the new endpoints
Resolves CORE-656, CORE-655, CORE-654
Also resolves CORE-574
* feat: add feature flag loading in projects
* fix: make feature flag consume itself
* fix: rename container registration to featureFlagRouter
* fix: refactor
* behavioral feature flags
* add environment to server
* limit "useTemplateDb" to non feature flagged migrations
* filter migrations and entities according to those which are enabled in the environment
* run only migrations that are enabled when running 'medusa migrations run'
* add logging to the featureflag loader
* initial implementation of featureFlagEntity
* column descriptors
* initial startServerWithEnv (to be refactored)
* update commands
* final touches
* update loaders to fix unit tests
* enable all batch job tests
* update seed method
* add api test capabilities
* revert batch job test
* revert formatting changes
* pr feedback
* pr feedback
* remove unused imports
* rename feature flag decorators
* pr feedback
Co-authored-by: Sebastian Rindom <skrindom@gmail.com>
