feat: add welcome message functionality

- Introduced a new welcome service and repository for managing welcome messages, channels, and GIFs.
- Added commands to set welcome channel, message, DM, and GIF through the bot's configuration.
- Implemented event handling for new guild members to send welcome messages and DMs based on configuration.
- Updated main application to include the new welcome service in the bot's services.

main.go

@@ -15,6 +15,7 @@ import (
 	"velox-bot/internal/db/repos/rpsrepo"
 	"velox-bot/internal/db/repos/schedulerepo"
 	"velox-bot/internal/db/repos/settingsrepo"
+	"velox-bot/internal/db/repos/welcomerepo"
 	"velox-bot/internal/db/repos/twitchrepo"
 	"velox-bot/internal/db/repos/usersettingsrepo"
 	"velox-bot/internal/db/services"
@@ -26,6 +27,7 @@ import (
 	"velox-bot/internal/db/services/schedule"
 	"velox-bot/internal/db/services/twitch"
 	"velox-bot/internal/db/services/usersettings"
+	"velox-bot/internal/db/services/welcome"
 )
 
 func main() {
@@ -48,6 +50,7 @@ func main() {
 	projectsRepo := projectsrepo.NewRepo(db)
 	scheduleRepo := schedulerepo.NewRepo(db)
 	userSettingsRepo := usersettingsrepo.NewRepo(db)
+	welcomeRepo := welcomerepo.NewRepo(db)
 	twitchRepo := twitchrepo.NewRepo(db)
 	levelService := level.New(levelRepo, settingsRepo)
 	levelSettingsService := levelsettings.New(settingsRepo)
@@ -57,7 +60,8 @@ func main() {
 	projectsService := projects.New(projectsRepo)
 	rpsService := rps.New(rpsRepo)
 	twitchService := twitch.New(twitchRepo, config.TwitchClientID)
-	services := services.NewServices(levelService, levelSettingsService, meetingService, scheduleService, userSettingsService, projectsService, rpsService, twitchService)
+	welcomeService := welcome.New(welcomeRepo)
+	services := services.NewServices(levelService, levelSettingsService, meetingService, scheduleService, userSettingsService, projectsService, rpsService, twitchService, welcomeService)
 
 	bot, err := bot.NewBot(config.BotToken, config.AppID, config.GuildID, config.LavalinkHost, config.LavalinkPass, commands.AllCommands, services)
 	if err != nil {