chore: cleanup/improve bootstrap (#14023)

* chore: cleanup/improve bootstrap

* chore: cleanup/improve bootstrap

* Create few-guests-visit.md

packages/core/modules-sdk/src/loaders/module-loader.ts

@@ -1,4 +1,5 @@
 import { Logger, MedusaContainer, ModuleResolution } from "@medusajs/types"
+import { promiseAll } from "@medusajs/utils"
 import { asValue } from "@medusajs/deps/awilix"
 import { EOL } from "os"
 import { MODULE_SCOPE } from "../types"
@@ -17,23 +18,22 @@ export const moduleLoader = async ({
   migrationOnly?: boolean
   loaderOnly?: boolean
 }): Promise<void> => {
-  for (const resolution of Object.values(moduleResolutions ?? {})) {
-    const registrationResult = await loadModule(
-      container,
-      resolution,
-      logger!,
-      migrationOnly,
-      loaderOnly
+  const resolutions = Object.values(moduleResolutions ?? {})
+  const results = await promiseAll(
+    resolutions.map((resolution) =>
+      loadModule(container, resolution, logger!, migrationOnly, loaderOnly)
     )
+  )
 
+  results.forEach((registrationResult, idx) => {
     if (registrationResult?.error) {
       const { error } = registrationResult
       logger?.error(
-        `Could not resolve module: ${resolution.definition.label}. Error: ${error.message}${EOL}`
+        `Could not resolve module: ${resolutions[idx].definition.label}. Error: ${error.message}${EOL}`
       )
       throw error
     }
-  }
+  })
 }
 
 async function loadModule(