feat: Initialized Discord bot

- Bump version to 0.6.0
- discord: Added /quest list
- discord: Added /quest create (admin)

discord/src/main.rs

@@ -0,0 +1,43 @@
+use clap::Parser;
+use dotenvy::dotenv;
+use poise::serenity_prelude as serenity;
+use squad_quest::config::Config;
+
+mod commands;
+mod cli;
+
+struct Data {
+    pub config: Config,
+}
+type Error = Box<dyn std::error::Error + Send + Sync>;
+type Context<'a> = poise::Context<'a, Data, Error>;
+
+#[tokio::main]
+async fn main() {
+    dotenv().unwrap();
+
+    let cli = cli::Cli::parse();
+    let config = Config::load(cli.config.clone());
+
+    let token = std::env::var("DISCORD_TOKEN").expect("missing DISCORD_TOKEN");
+    let intents = serenity::GatewayIntents::non_privileged();
+
+    let framework = poise::Framework::builder()
+        .options(poise::FrameworkOptions {
+            commands: vec![commands::quest::quest(), commands::register()],
+            ..Default::default()
+        })
+        .setup(|ctx, _ready, framework| {
+            Box::pin(async move {
+                poise::builtins::register_globally(ctx, &framework.options().commands).await?;
+                Ok(Data {config})
+            })
+        })
+        .build();
+
+    let client = serenity::ClientBuilder::new(token, intents)
+        .framework(framework)
+        .await;
+    client.unwrap().start().await.unwrap();
+}
+