feat: initialize booster role bot with database and Discord integration

- Add drizzle configuration for SQLite database
- Create package.json with necessary dependencies and scripts
- Implement configuration loading for Discord bot
- Define permissions for roles
- Set up database schema for booster roles
- Create Discord client and commands for managing booster roles
- Handle guild member updates to manage roles based on boost status
- Implement boost eligibility checks and role management logic
- Add tests for boost eligibility and role guards
- Create service for managing booster roles with in-memory storage for testing
- Configure TypeScript settings for the project

.env.example

@@ -0,0 +1,5 @@
+DISCORD_TOKEN=
+DISCORD_CLIENT_ID=
+DISCORD_GUILD_ID=
+DATABASE_URL=file:./data/booster-role.sqlite
+BOOSTER_ROLE_ANCHOR_ROLE_ID=