Add description (#1383)

target_chains/solana/pyth_solana_receiver_sdk/Cargo.toml

@@ -1,6 +1,9 @@
 [package]
 name = "pyth-solana-receiver-sdk"
 version = "0.1.0"
+description = "SDK for the Pyth Solana Receiver program"
+authors = ["Pyth Data Association"]
+repository = "https://github.com/pyth-network/pyth-crosschain"
 license = "Apache-2.0"
 edition = "2021"