Add CredentialsModule to Groups and Authors modules

This ensures both modules have access to the necessary credentials functionality, improving their capability to handle secure operations. The inclusion of DbModule in AuthorsModule aligns it with the design pattern used in GroupsModule.

apps/backend/src/app/authors/authors.module.ts

@@ -1,8 +1,11 @@
 import { Module } from "@nestjs/common";
 import { AuthorsController } from "apps/backend/src/app/authors/authors.controller";
 import { AuthorsService } from "apps/backend/src/app/authors/authors.service";
+import { CredentialsModule } from "apps/backend/src/app/credentials/credentials.module";
+import { DbModule } from "apps/backend/src/app/db/db.module";
 
 @Module({
+	imports: [DbModule, CredentialsModule],
 	controllers: [AuthorsController],
 	providers: [AuthorsService],
 })

apps/backend/src/app/groups/groups.module.ts

@@ -1,10 +1,11 @@
 import { Module } from "@nestjs/common";
+import { CredentialsModule } from "apps/backend/src/app/credentials/credentials.module";
 import { DbModule } from "../db/db.module";
 import { GroupsController } from "./groups.controller";
 import { GroupsService } from "./groups.service";
 
 @Module({
-	imports: [DbModule],
+	imports: [DbModule, CredentialsModule],
 	controllers: [GroupsController],
 	providers: [GroupsService],
 })