feat: implement ApiTokenGuard for authentication and apply it to relevant controllers

src/api/api.module.ts

@@ -5,10 +5,12 @@ import { ProjectModule } from "../project/project.module";
 import { ApiService } from "./api.service";
 import { ApiController } from "./api.controller";
 import { Project } from "../project/entities/project.entity";
+import { ApiTokenGuard } from "./guards/api-token.guard";
 
 @Module({
   imports: [ProjectModule, TypeOrmModule.forFeature([Token, Project])],
   controllers: [ApiController],
-  providers: [ApiService],
+  providers: [ApiService, ApiTokenGuard],
+  exports: [ApiTokenGuard, TypeOrmModule],
 })
 export class ApiModule {}