docs: improve commerce modules [1/n] (#9498)

Improve and add docs for API Key, Auth, and Cart Modules

[1/n]

www/apps/resources/app/commerce-modules/api-key/examples/page.mdx

@@ -13,13 +13,12 @@ In this guide, you’ll find common examples of how you can use the API Key Modu
 <CodeTabs groupId="app-type">
   <CodeTab label="Medusa API Router" value="medusa">
 
-  ```ts
-  import { MedusaRequest, MedusaResponse } from "@medusajs/framework/http"
-  import { IApiKeyModuleService } from "@medusajs/framework/types"
-  import { Modules } from "@medusajs/framework/utils"
+```ts
+import { MedusaRequest, MedusaResponse } from "@medusajs/framework/http"
+import { Modules } from "@medusajs/framework/utils"
 
 export async function POST(request: MedusaRequest, res: MedusaResponse) {
-  const apiKeyModuleService: IApiKeyModuleService = request.scope.resolve(
+  const apiKeyModuleService = request.scope.resolve(
     Modules.API_KEY
   )
 
@@ -68,13 +67,12 @@ export async function POST(request: Request) {
 <CodeTabs groupId="app-type">
   <CodeTab label="Medusa API Router" value="medusa">
 
-  ```ts
-  import { MedusaRequest, MedusaResponse } from "@medusajs/framework/http"
-  import { IApiKeyModuleService } from "@medusajs/framework/types"
-  import { Modules } from "@medusajs/framework/utils"
+```ts
+import { MedusaRequest, MedusaResponse } from "@medusajs/framework/http"
+import { Modules } from "@medusajs/framework/utils"
 
 export async function GET(request: MedusaRequest, res: MedusaResponse) {
-  const apiKeyModuleService: IApiKeyModuleService = request.scope.resolve(
+  const apiKeyModuleService = request.scope.resolve(
     Modules.API_KEY
   )
 
@@ -113,14 +111,13 @@ export async function GET(request: Request) {
 
 ```ts collapsibleLines="1-9" expandButtonLabel="Show Imports"
 import { AuthenticatedMedusaRequest, MedusaResponse } from "@medusajs/framework/http"
-import { IApiKeyModuleService } from "@medusajs/framework/types"
 import { Modules } from "@medusajs/framework/utils"
 
 export async function POST(
   request: AuthenticatedMedusaRequest,
   res: MedusaResponse
 ) {
-  const apiKeyModuleService: IApiKeyModuleService = request.scope.resolve(
+  const apiKeyModuleService = request.scope.resolve(
     Modules.API_KEY
   )
 
@@ -172,13 +169,12 @@ export async function POST(request: Request, { params }: ContextType) {
 <CodeTabs groupId="app-type">
   <CodeTab label="Medusa API Router" value="medusa">
 
-  ```ts
-  import { MedusaRequest, MedusaResponse } from "@medusajs/framework/http"
-  import { IApiKeyModuleService } from "@medusajs/framework/types"
-  import { Modules } from "@medusajs/framework/utils"
+```ts
+import { MedusaRequest, MedusaResponse } from "@medusajs/framework/http"
+import { Modules } from "@medusajs/framework/utils"
 
 export async function POST(request: MedusaRequest, res: MedusaResponse) {
-  const apiKeyModuleService: IApiKeyModuleService = request.scope.resolve(
+  const apiKeyModuleService = request.scope.resolve(
     Modules.API_KEY
   )
 
@@ -229,19 +225,18 @@ export async function POST(request: Request, { params }: ContextType) {
 <CodeTabs groupId="app-type">
   <CodeTab label="Medusa API Router" value="medusa">
 
-  ```ts collapsibleLines="1-8" expandButtonLabel="Show Imports"
-  import { 
-    AuthenticatedMedusaRequest, 
-    MedusaResponse,
-  } from "@medusajs/framework/http"
-  import { IApiKeyModuleService } from "@medusajs/framework/types"
-  import { Modules } from "@medusajs/framework/utils"
+```ts collapsibleLines="1-8" expandButtonLabel="Show Imports"
+import { 
+  AuthenticatedMedusaRequest, 
+  MedusaResponse,
+} from "@medusajs/framework/http"
+import { Modules } from "@medusajs/framework/utils"
 
 export async function POST(
   request: AuthenticatedMedusaRequest,
   res: MedusaResponse
 ) {
-  const apiKeyModuleService: IApiKeyModuleService = request.scope.resolve(
+  const apiKeyModuleService = request.scope.resolve(
     Modules.API_KEY
   )