set cargo default-run to the tedge binary

This allows running the tedge binary via `cargo run` without having to specify `--bin tedge`

crates/core/tedge/Cargo.toml

@@ -9,6 +9,7 @@ license = { workspace = true }
 homepage = { workspace = true }
 repository = { workspace = true }
 readme = "README.md"
+default-run = "tedge"
 
 [dependencies]
 anstyle = { workspace = true }