chore: Migrate ESLint and prettier to Biome (#3634)

* Migrate eslint and prettier to biomejs

This does NOT include examples/bigbot as it has its own formatter

* Update to biome 1.8.0

* Readd dotenv dev dependency to rest

During a merge it got lost

docker-apps/rest-passthrough/src/fastify.ts

@@ -1,6 +1,6 @@
-import fastifyMultipart from '@fastify/multipart'
 import fastifyEnv from '@fastify/env'
 import fastifyHelmet from '@fastify/helmet'
+import fastifyMultipart from '@fastify/multipart'
 import fastify, { type FastifyInstance } from 'fastify'
 
 export const buildFastifyApp = async (): Promise<FastifyInstance> => {

docker-apps/rest-passthrough/src/server.ts

@@ -1,5 +1,5 @@
+import { type RequestMethods, createRestManager } from '@discordeno/rest'
 import type { MultipartFile, MultipartValue } from '@fastify/multipart'
-import { createRestManager, type RequestMethods } from '@discordeno/rest'
 import { buildFastifyApp } from './fastify.js'
 
 const app = await buildFastifyApp()
@@ -13,7 +13,7 @@ const discordRestManager = createRestManager({
   token: app.config.DISCORD_TOKEN,
 })
 
-app.get('/timecheck', async (request, reply) => {
+app.get('/timecheck', async (_request, reply) => {
   reply.status(200).send({
     message: Date.now(),
   })