feat: initialize newsletter project with IMAP email processing and Discord integration

- Add Cargo.toml for project dependencies
- Create Dockerfile for building and running the application
- Add docker-compose configuration for service management
- Implement email monitoring and processing in main.rs
- Parse emails and send notifications to Discord
- Include configuration file for IMAP and Discord settings

Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "newsletter"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+native-tls = { version = "0.2", features = ["vendored"] }
+imap = "2.4"
+mailparse = "0.14"
+reqwest = { version = "0.11", features = ["blocking", "json"] }
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+toml = "0.8"
+chrono = { version = "0.4", features = ["serde"] }
+
+
+