Add license to crates (#7578)

* Add license to crates

This is required to publish to crates.io

* Add more licenses

polkadot/runtime/westend/Cargo.toml

@@ -4,6 +4,7 @@ build = "build.rs"
 version.workspace = true
 authors.workspace = true
 edition.workspace = true
+license.workspace = true
 
 [dependencies]
 bitvec = { version = "1.0.0", default-features = false, features = ["alloc"] }

polkadot/runtime/westend/constants/Cargo.toml

@@ -3,6 +3,7 @@ name = "westend-runtime-constants"
 version.workspace = true
 authors.workspace = true
 edition.workspace = true
+license.workspace = true
 
 [dependencies]
 smallvec = "1.11.0"