feat(discord-bot): command handler and train cmd

bots/discord/registerCommands.js

@@ -0,0 +1,32 @@
+import { REST, Routes } from 'discord.js';
+import { readdirSync, readFileSync } from 'node:fs';
+const configJSON = readFileSync('../config.json', 'utf-8');
+const config = JSON.parse(configJSON);
+
+const commands = [];
+// Grab all the command files from the commands directory you created earlier
+const commandFiles = readdirSync('./commands').filter(file => file.endsWith('.js'));
+
+// Grab the SlashCommandBuilder#toJSON() output of each command's data for deployment
+for (const file of commandFiles) {
+	const command = await import(`./commands/${file}`);
+	commands.push(command.default.data.toJSON());
+}
+
+// Construct and prepare an instance of the REST module
+const rest = new REST({ version: '10' }).setToken(config.discord.token);
+
+try {
+    console.log(`Started refreshing ${commands.length} application (/) commands.`);
+
+    // The put method is used to fully refresh all commands in the guild with the current set
+    const data = await rest.put(
+        Routes.applicationCommands(config.discord.id),
+        { body: commands },
+    );
+
+    console.log(`Successfully reloaded ${data.length} application (/) commands.`);
+} catch (error) {
+    // And of course, make sure you catch and log any errors!
+    console.error(error);
+}