chore(): Reorganize modules (#7210)

**What**
Move all modules to the modules directory

packages/modules/link-modules/src/migration/index.ts

@@ -0,0 +1,86 @@
+import {
+  JoinerRelationship,
+  LoaderOptions,
+  Logger,
+  ModuleJoinerConfig,
+  ModuleServiceInitializeOptions,
+} from "@medusajs/types"
+import { generateEntity } from "../utils"
+
+import { DALUtils, ModulesSdkUtils } from "@medusajs/utils"
+
+export function getMigration(
+  joinerConfig: ModuleJoinerConfig,
+  serviceName: string,
+  primary: JoinerRelationship,
+  foreign: JoinerRelationship
+) {
+  return async function runMigrations(
+    {
+      options,
+      logger,
+    }: Pick<
+      LoaderOptions<ModuleServiceInitializeOptions>,
+      "options" | "logger"
+    > = {} as any
+  ) {
+    logger ??= console as unknown as Logger
+
+    const dbData = ModulesSdkUtils.loadDatabaseConfig("link_modules", options)
+    const entity = generateEntity(joinerConfig, primary, foreign)
+    const pathToMigrations = __dirname + "/../migrations"
+
+    const orm = await DALUtils.mikroOrmCreateConnection(
+      dbData,
+      [entity],
+      pathToMigrations
+    )
+
+    const tableName = entity.meta.collection
+
+    let hasTable = false
+    try {
+      await orm.em.getConnection().execute(`SELECT 1 FROM ${tableName} LIMIT 0`)
+      hasTable = true
+    } catch {}
+
+    const generator = orm.getSchemaGenerator()
+    if (hasTable) {
+      /* const updateSql = await generator.getUpdateSchemaSQL()
+      const entityUpdates = updateSql
+        .split(";")
+        .map((sql) => sql.trim())
+        .filter((sql) =>
+          sql.toLowerCase().includes(`alter table "${tableName.toLowerCase()}"`)
+        )
+
+      if (entityUpdates.length > 0) {
+        try {
+          await generator.execute(entityUpdates.join(";"))
+          logger.info(`Link module "${serviceName}" migration executed`)
+        } catch (error) {
+          logger.error(
+            `Link module "${serviceName}" migration failed to run - Error: ${error}`
+          )
+        }
+      } else {
+        logger.info(`Skipping "${tableName}" migration.`)
+      }*/
+      logger.info(
+        `Link module "${serviceName}" table update skipped because the table already exists. Please write your own migration if needed.`
+      )
+    } else {
+      try {
+        await generator.createSchema()
+
+        logger.info(`Link module "${serviceName}" migration executed`)
+      } catch (error) {
+        logger.error(
+          `Link module "${serviceName}" migration failed to run - Error: ${error}`
+        )
+      }
+    }
+
+    await orm.close()
+  }
+}