Feat/index sync data (#11169)

**what**
Synchronisation process  implementation for configured entity to be indexed

packages/modules/index/src/migrations/.snapshot-medusa-index.json

@@ -1,7 +1,5 @@
 {
-  "namespaces": [
-    "public"
-  ],
+  "namespaces": ["public"],
   "name": "public",
   "tables": [
     {
@@ -108,10 +106,7 @@
         },
         {
           "keyName": "index_data_pkey",
-          "columnNames": [
-            "id",
-            "name"
-          ],
+          "columnNames": ["id", "name"],
           "composite": true,
           "constraint": true,
           "primary": true,
@@ -168,12 +163,7 @@
           "primary": false,
           "nullable": false,
           "default": "'pending'",
-          "enumItems": [
-            "pending",
-            "processing",
-            "done",
-            "error"
-          ],
+          "enumItems": ["pending", "processing", "done", "error"],
           "mappedType": "enum"
         },
         "created_at": {
@@ -232,9 +222,7 @@
         },
         {
           "keyName": "index_metadata_pkey",
-          "columnNames": [
-            "id"
-          ],
+          "columnNames": ["id"],
           "composite": false,
           "constraint": true,
           "primary": true,
@@ -366,9 +354,7 @@
         },
         {
           "keyName": "index_relation_pkey",
-          "columnNames": [
-            "id"
-          ],
+          "columnNames": ["id"],
           "composite": false,
           "constraint": true,
           "primary": true,

packages/modules/index/src/migrations/Migration20250127105159.ts

@@ -0,0 +1,21 @@
+import { Migration } from "@mikro-orm/migrations"
+
+export class Migration20250127105159 extends Migration {
+  override async up(): Promise<void> {
+    this.addSql(
+      `alter table if exists "index_relation" alter column "id" set not null;`
+    )
+    this.addSql(
+      `alter table if exists "index_relation" add constraint "IDX_index_relation_id_pivot_parent_name_child_name_parent_id_child_id_unique" unique ("parent_id", "child_id", "child_name", "parent_name", "pivot");`
+    )
+  }
+
+  override async down(): Promise<void> {
+    this.addSql(
+      `alter table if exists "index_relation" drop constraint "IDX_index_relation_id_pivot_parent_name_child_name_parent_id_child_id_unique";`
+    )
+    this.addSql(
+      `alter table if exists "index_relation" alter column "id" drop not null;`
+    )
+  }
+}