feat(workflows,medusa,utils): add medusa v2 feature flag (#5603)

* chore: add medusa v2 feature flag

* chore: cleanup more FF

* chore: cleanup workflows FF

* chore: add comments on broken specs

* chore: added check for package registration

* chore: reenable workflows FF for create order workflow

* chore: disable FF on test cli db

* chore: hide loader validation behind FF

* chore: use medusa v2 enabled

* chore: register feature flag router in use-db

* chore: change to minro

.github/workflows/test-cli-with-database.yml

@@ -86,4 +86,4 @@ jobs:
         working-directory: ../cli-test
 
       - name: Testing server
-        uses: ./.github/actions/test-server
+        uses: ./.github/actions/test-server