Add tool for visualizing crate hierarchy

Author: TrueDoctor

tools/crate-hierarchy-viz/Cargo.lock

@@ -0,0 +1,14 @@
+[package]
+name = "crate-hierarchy-viz"
+version = "0.1.0"
+edition = "2024"
+description = "Tool to visualize the crate hierarchy in the Graphite workspace"
+
+[workspace]
+members = ["."]
+
+[dependencies]
+serde = { version = "1.0", features = ["derive"] }
+toml = "0.8"
+anyhow = "1.0"
+clap = { version = "4.5", features = ["derive"] }