feat(inventory-next, types): inventory module conversion (#6596)

* init

* create new interface

* prep integration tests

* update denpencies

* inventory service partial tests

* finalize integration tests

* add events

* align events

* adjust inventory level reservation levels

* add test validating reserved quantity after reseration item update

* fix nits

* rename to inventory-next

* update yarn.lock

* remove changelog

* remove fixtures

* remove unused files

* ready for review

* Update packages/inventory-next/package.json

Co-authored-by: Oli Juhl <59018053+olivermrbl@users.noreply.github.com>

* pr feedback

* add tests and docs for partition-array util

* remote decorators from private method

* fix unit tests

* add migrations

* add foreign keys

* fix build

---------

Co-authored-by: Oli Juhl <59018053+olivermrbl@users.noreply.github.com>

packages/inventory-next/mikro-orm.config.dev.ts

@@ -0,0 +1,13 @@
+import * as entities from "./src/models"
+
+import { TSMigrationGenerator } from "@medusajs/utils"
+
+module.exports = {
+  entities: Object.values(entities),
+  schema: "public",
+  clientUrl: "postgres://postgres@localhost/medusa-inventory",
+  type: "postgresql",
+  migrations: {
+    generator: TSMigrationGenerator,
+  },
+}