feat(medusa-plugin-meilisearch): Update + improve Meilisearch plugin (#3377)

* feat(medusa-plugin-meilisearch): Upgrade meilisearch deps + migrate plugin to TS

* fix version

* Remove transaction base service from search service

* Create .changeset/strange-mails-pump.md

* Backward compatibility

* Address PR feedback

* Fix folder structure

* Update readme

* Move types

* fix deps

* Change version in changeset

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

packages/medusa-plugin-meilisearch/README.md

@@ -15,8 +15,12 @@ Learn more about how you can use this plugin in the [documentaion](https://docs.
     "[indexName]": "[meilisearch settings passed to meilisearch's `updateSettings()` method]"
     // example
     products: {
-      searchableAttributes: ["title", "description", "variant_sku"],
-      displayedAttributes: ["title", "description", "variant_sku", "thumbnail", "handle"],
+      indexSettings: {
+        searchableAttributes: ["title", "description", "variant_sku"],
+        displayedAttributes: ["title", "description", "variant_sku", "thumbnail", "handle"],
+      },
+      primaryKey: "some_id"
+      transformer: (product: Product) => ({ id: product.id })
     }
   }
 }