refactor!: organize directories and files (#268)

* refactor!: organize directory structure

* fix: avoid stack overflow err

* chore: swtch back to std/encoding for base64

* style: format source files

src/structures/channel.ts

@@ -1,45 +0,0 @@
-import { cacheHandlers } from "../controllers/cache.ts";
-import { ChannelCreatePayload, Unpromise } from "../types/types.ts";
-
-export async function createChannel(
-  data: ChannelCreatePayload,
-  guildID?: string,
-) {
-  const {
-    guild_id: rawGuildID,
-    last_message_id: lastMessageID,
-    user_limit: userLimit,
-    rate_limit_per_user: rateLimitPerUser,
-    parent_id: parentID,
-    last_pin_timestamp: lastPinTimestamp,
-    permission_overwrites,
-    ...rest
-  } = data;
-
-  const channel = {
-    ...rest,
-    /** The guild id of the channel if it is a guild channel. */
-    guildID: guildID || rawGuildID || "",
-    /** The id of the last message sent in this channel */
-    lastMessageID,
-    /** The amount of users allowed in this voice channel. */
-    userLimit,
-    /** The rate limit(slowmode) in this text channel that users can send messages. */
-    rateLimitPerUser,
-    /** The category id for this channel */
-    parentID,
-    /** The last time when a message was pinned in this channel */
-    lastPinTimestamp,
-    /** The permission overwrites for this channel */
-    permissionOverwrites: permission_overwrites,
-    /** Whether this channel is nsfw or not */
-    nsfw: data.nsfw || false,
-    /** The mention of the channel */
-    mention: `<#${data.id}>`,
-  };
-
-  cacheHandlers.set("channels", data.id, channel);
-  return channel;
-}
-
-export interface Channel extends Unpromise<ReturnType<typeof createChannel>> {}