feat(auth, medusa): Initial auth module middleware (#6271)

note: This is an initial implementation

Co-authored-by: Sebastian Rindom <7554214+srindom@users.noreply.github.com>

packages/types/src/auth/service.ts

@@ -15,6 +15,10 @@ import { Context } from "../shared-context"
 import { FindConfig } from "../common"
 import { IModuleService } from "../modules-sdk"
 
+export type JWTGenerationOptions = {
+  expiresIn?: string | number
+}
+
 export interface IAuthModuleService extends IModuleService {
   authenticate(
     provider: string,
@@ -72,6 +76,16 @@ export interface IAuthModuleService extends IModuleService {
     sharedContext?: Context
   ): Promise<AuthUserDTO>
 
+  generateJwtToken(
+    authUserId: string,
+    scope: string,
+    options?: JWTGenerationOptions
+  ): Promise<string>
+  retrieveAuthUserFromJwtToken(
+    token: string,
+    scope: string
+  ): Promise<AuthUserDTO>
+
   listAuthUsers(
     filters?: FilterableAuthProviderProps,
     config?: FindConfig<AuthUserDTO>,