Format toml files (#30112)

* Add taplo fmt config for toml fmt

* fmt toml files

* Add even-better-toml to extensions recommendations

python/tidy/tests/Cargo.toml

@@ -8,4 +8,4 @@ publish = false
 test-package = { version = "*" }
 
 [lib]
-path = "lib.rs"
+path = "lib.rs"