chore(test): Add license MIT

Author: tottoto

tests/service_named_result/Cargo.toml

@@ -1,5 +1,6 @@
 [package]
 name = "service_named_result"
+license = "MIT"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html