✨ feat(project): add initial Cargo.toml for cull-gmail tool

- introduce Cargo.toml with basic package metadata
- set up project dependencies and include files

Cargo.toml

@@ -0,0 +1,24 @@
+[package]
+name = "cull-gmail"
+description = """Tool to assist in culling emails from a 
+gmail account using the gmail API"""
+version = "0.1.0"
+authors = ["Jeremiah Russell <jrussell@jerus.ie>"]
+edition = "2024"
+rust-version = "1.87"
+keywords = ["gmail", "gmail-api", "management"]
+categories = ["command-line-utilities"]
+license = "MIT OR Apache-2.0"
+readme = "README.md"
+repository = "https://github.com/jerus-org/gen-changelog"
+include = [
+    "**/*.rs",
+    "Cargo.toml",
+    "README.md",
+    "LICENSE-MIT",
+    "LICENSE-APACHE",
+    "CHANGELOG.md",
+    "docs",
+]
+
+[dependencies]