build: centralize internal dependencies using workspace inheritance

Cargo.toml

@@ -11,3 +11,11 @@ resolver = "2"
 edition = "2021"
 license = "Apache-2.0"
 rust-version = "1.75"
+repository = "https://github.com/Lochnair/irtt-rs"
+homepage = "https://github.com/Lochnair/irtt-rs"
+readme = "README.md"
+
+[workspace.dependencies]
+irtt-proto = { version = "0.1.0", path = "crates/irtt-proto" }
+irtt-client = { version = "0.1.0", path = "crates/irtt-client" }
+irtt-stats = { version = "0.1.0", path = "crates/irtt-stats" }