chore(project): initialize project with core configuration and dependencies

- Add .gitignore and .env.example files for project setup
- Create build script for proto compilation with tonic-prost
- Generate Cargo.lock with all project dependencies
- Configure project structure and ignore patterns for development environment

Cargo.toml

@@ -0,0 +1,27 @@
+[package]
+name = "emailks"
+version = "0.1.0"
+edition = "2024"
+
+[lib]
+name = "emailks"
+path = "lib.rs"
+
+[[bin]]
+name = "emailks"
+path = "main.rs"
+[dependencies]
+dotenvy = "0.15"
+lettre = { version = "0.11", features = ["tokio1-native-tls"] }
+prost = "0.14"
+prost-types = "0.14"
+tokio = { version = "1", features = ["rt-multi-thread", "macros", "sync", "signal"] }
+tokio-stream = { version = "0.1", features = ["sync"] }
+tonic = "0.14"
+tonic-health = "0.14"
+tonic-prost = "0.14"
+tracing = "0.1"
+tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+
+[build-dependencies]
+tonic-prost-build = "0.14"