feat(TextChannel): add searchInteraction

Document/Message.md

@@ -47,17 +47,6 @@ await message.contextMenu(botID, commandName);
 ```
 </details>
 <details open>
-<summary>Issue ?</summary>
-
-- It has some minor bugs.
-```js
-DiscordAPIError [20012] You are not authorized to perform this action on this application
-Fix it: creating 1 DMs with bot
-In this way, all Slash commands can be obtained
-```
-- With Gateway guild.searchInteraction() (using gateway)
-- With REST: Working ! [TextBasedChannel.sendSlash()].
-</details>
 
 ## MessageEmbed ?
 - Because Discord has removed the ability to send Embeds in its API, that means MessageEmbed is unusable. But I have created a constructor that uses oEmbed with help [from this site](https://www.reddit.com/r/discordapp/comments/82p8i6/a_basic_tutorial_on_how_to_get_the_most_out_of/)

Document/SlashCommand.md

@@ -1,6 +1,6 @@
 # Slash command demo 
 - Support Autocomplete feature (half)
-- Unused `guild.searchInteraction()` (Use only if not working properly)
+- Unused `guild.searchInteraction()` (Deleted)
 
 # <strong>BREAKING CHANGE: Using Slash Command (Sub Command / Sub Group Command) will not accept subCommand argument in args. That means Command Name needs to be changed same as Discord Client</strong>