gl-sdk-cli: add license and repository metadata

crates.io rejected the 0.4.0 publish with 'missing or empty metadata
fields: license'. Mirror the license/repository fields the other
published crates already carry.

Author: cdecker

libs/gl-sdk-cli/Cargo.toml

@@ -3,6 +3,8 @@ name = "gl-sdk-cli"
 version = "0.4.0"
 edition = "2021"
 description = "CLI wrapper for gl-sdk"
+license = "MIT"
+repository = "https://github.com/Blockstream/greenlight"
 
 [features]
 experimental-splicing = ["glsdk/experimental-splicing"]