feat: standalone rest server (#290)

* feat: standalone rest server

* desc

* fmt

* <3 vlad

* Update src/rest/README.md

Co-authored-by: Ayyan <ayyantee@gmail.com>

* Update src/rest/README.md

Co-authored-by: Ayyan <ayyantee@gmail.com>

* Update README.md

* Update src/rest/deps.ts

Co-authored-by: Ayyan <ayyantee@gmail.com>

* Update src/rest/queue.ts

Co-authored-by: Ayyan <ayyantee@gmail.com>

* chore: ignore no-explicit-any rule

* fix(rest): replace with correct import paths

* deno fmt

* fixes

* fmt

* use user agent cons

* fix typings

* Update src/rest/cache.ts

Co-authored-by: Ayyan <ayyantee@gmail.com>

* Update src/rest/cache.ts

Co-authored-by: Ayyan <ayyantee@gmail.com>

Co-authored-by: Ayyan <ayyantee@gmail.com>

src/api/handlers/channel.ts

@@ -1,4 +1,4 @@
-import { RequestManager } from "../../rest/mod.ts";
+import { RequestManager } from "../../rest/request_manager.ts";
 import {
   ChannelEditOptions,
   ChannelTypes,

src/api/handlers/guild.ts

@@ -1,5 +1,5 @@
 import { identifyPayload } from "../../bot.ts";
-import { RequestManager } from "../../rest/mod.ts";
+import { RequestManager } from "../../rest/request_manager.ts";
 import {
   AuditLogs,
   BannedUser,

src/api/handlers/member.ts

@@ -1,5 +1,5 @@
 import { botID } from "../../bot.ts";
-import { RequestManager } from "../../rest/mod.ts";
+import { RequestManager } from "../../rest/request_manager.ts";
 import {
   ChannelCreatePayload,
   DMChannelCreatePayload,

src/api/handlers/message.ts

@@ -1,5 +1,5 @@
 import { botID } from "../../bot.ts";
-import { RequestManager } from "../../rest/mod.ts";
+import { RequestManager } from "../../rest/request_manager.ts";
 import {
   Errors,
   MessageContent,

src/api/handlers/webhook.ts

@@ -1,5 +1,4 @@
 import { botID } from "../../bot.ts";
-import { RequestManager } from "../../rest/mod.ts";
 import {
   CreateSlashCommandOptions,
   EditSlashCommandOptions,
@@ -18,6 +17,7 @@ import { endpoints } from "../../util/constants.ts";
 import { botHasChannelPermissions } from "../../util/permissions.ts";
 import { urlToBase64 } from "../../util/utils.ts";
 import { structures } from "../structures/mod.ts";
+import { RequestManager } from "../../rest/request_manager.ts";
 
 /** Create a new webhook. Requires the MANAGE_WEBHOOKS permission. Returns a webhook object on success. Webhook names follow our naming restrictions that can be found in our Usernames and Nicknames documentation, with the following additional stipulations:
 *