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

src/project/project.controller.ts

@@ -1,7 +1,9 @@
-import { Body, Controller, Inject, Put } from "@nestjs/common";
+import { Body, Controller, Inject, Put, UseGuards } from "@nestjs/common";
 import { ProjectService } from "./project.service";
+import { ApiTokenGuard } from "src/api/guards/api-token.guard";
 
 @Controller("project")
+@UseGuards(ApiTokenGuard)
 export class ProjectController {
   constructor(
     @Inject(ProjectService)