Refactor: cleanup

- Introduce tracing
- Introduce cobra / viper framework
- Introduce resty client
- Seperate files in api/ and bot/
- Trim unused functions

bot/handleSlashEcho.go

@@ -0,0 +1,28 @@
+package bot
+
+import "github.com/bwmarrin/discordgo"
+
+func (b *Bot) handleSlashEcho(
+	s *discordgo.Session,
+	i *discordgo.InteractionCreate,
+) {
+	options := i.ApplicationCommandData().Options
+	if len(options) == 0 {
+		s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
+			Type: discordgo.InteractionResponseChannelMessageWithSource,
+			Data: &discordgo.InteractionResponseData{
+				Content: "No message provided!",
+			},
+		})
+		return
+	}
+
+	message := options[0].StringValue()
+
+	s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
+		Type: discordgo.InteractionResponseChannelMessageWithSource,
+		Data: &discordgo.InteractionResponseData{
+			Content: message,
+		},
+	})
+}