chore: establish development baseline

crates/bat-patch/Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "bat-patch"
+version.workspace = true
+edition.workspace = true
+authors.workspace = true
+license.workspace = true
+
+[dependencies]
+anyhow.workspace = true
+thiserror.workspace = true
+serde.workspace = true
+serde_json.workspace = true
+blake3.workspace = true
+
+# Binary diff/patch
+bsdiff = "0.2"
+
+# JSON patch
+json-patch = "4.2"
+
+[dev-dependencies]
+tempfile = "3.14"