build: centralize internal dependencies using workspace inheritance

crates/irtt-cli/Cargo.toml

@@ -12,6 +12,6 @@ stats = ["dep:irtt-stats"]
 [dependencies]
 clap = { version = "4.5", features = ["derive"] }
 ctrlc = "3.4"
-irtt-client = { path = "../irtt-client" }
-irtt-proto = { path = "../irtt-proto" }
-irtt-stats = { path = "../irtt-stats", optional = true }
+irtt-client.workspace = true
+irtt-proto.workspace = true
+irtt-stats = { workspace = true, optional = true }