feat: add Claude Code Skill Marketplace manager

Cargo.toml

@@ -0,0 +1,18 @@
+[package]
+name = "claude-code-skill-manager"
+version = "0.1.0"
+edition = "2021"
+
+[[bin]]
+name = "ccsm"
+path = "src/main.rs"
+
+[dependencies]
+clap = { version = "4", features = ["derive"] }
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+dirs = "5"
+reqwest = { version = "0.12", features = ["blocking", "rustls-tls"], default-features = false }
+zip = "2"
+flate2 = "1"
+tar = "0.4"