chore(medusa): migrate SalesChannel / ProductCategory repository (#3728)

* chore: Migrate sales channel repository

* chore: migrated product categories

* chore: remove alias + rename changset

* chore(medusa): Cleanup publishable api key sales channel repo

* rm comment

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Co-authored-by: adrien2p <adrien.deperetti@gmail.com>

.changeset/eight-monkeys-bathe.md

@@ -0,0 +1,5 @@
+---
+"@medusajs/medusa": patch
+---
+
+chore(medusa): migrate SalesChannel / ProductCategory repository