chore: add license, repository, keywords, and rust-version to Cargo.toml

Cargo.toml

@@ -2,13 +2,14 @@
 name = "keep"
 version = "0.1.0"
 edition = "2024"
+rust-version = "1.85"
 description = "Keep and manage temporary files with automatic compression and metadata generation"
 readme = "README.md"
+license = "MIT"
+repository = "https://gitea.gt0.ca/asp/keep"
+keywords = ["cli", "files", "compression", "metadata"]
 categories = ["command-line-utilities"]
 
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
 anyhow = "1.0"
 axum = { version = "0.8", optional = true }