feat!: implemented answer buttons

- Also you can /init without restarting bot

BREAKING CHANGE: Changed type of Data::discord to
Arc<Mutex<DiscordConfig>, removed field pending_answers from
DiscordConfig

discord/src/main.rs

@@ -1,3 +1,5 @@
+use std::sync::{Arc, Mutex};
+
 use clap::Parser;
 use dotenvy::dotenv;
 use poise::serenity_prelude as serenity;
@@ -11,7 +13,7 @@ mod config;
 
 struct Data {
     pub config: Config,
-    pub discord: DiscordConfig,
+    pub discord: Arc<Mutex<DiscordConfig>>,
 }
 type Error = Box<dyn std::error::Error + Send + Sync>;
 type Context<'a> = poise::Context<'a, Data, Error>;
@@ -45,7 +47,7 @@ async fn main() {
                 poise::builtins::register_globally(ctx, &framework.options().commands).await?;
                 Ok(Data {
                     config,
-                    discord,
+                    discord: Arc::new(Mutex::new(discord)),
                 })
             })
         })