add event to handle incoming interaction creation events

every fired slash command is actually an event which needs to be handled
and deferred to the correct command interaction handler.

server/events/interactionCreate.ts

@@ -0,0 +1,21 @@
+import { CommandInteractionOptionResolver } from "discord.js"
+import { ExtendedInteraction } from "../types/commandTypes"
+import { client } from "../.."
+import { logger } from "../logger"
+
+export const name = 'interactionCreate'
+export async function execute(interaction: ExtendedInteraction) {
+  //console.dir(interaction, { depth: null })
+  if (interaction.isCommand()) {
+    logger.info(`Interaction is a command.`, { guildId: interaction.guild?.id })
+    await interaction.deferReply()
+    const command = client.commands.get(interaction.commandName)
+    if (!command)
+      return interaction.followUp('Invalid command')
+    command.run({
+      args: interaction.options as CommandInteractionOptionResolver,
+      client,
+      interaction
+    })
+  }
+}