Add Jamil Lambert as an author of client

After all the work done it is finally time to take some accountability.

Add Jamil Lambert as an author of the client crate.

Author: jamillambert

client/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "corepc-client"
 version = "0.8.0"
-authors = ["Tobin C. Harding <me@tobin.cc>"]
+authors = ["Tobin C. Harding <me@tobin.cc>", "Jamil Lambert <Jamil.Lambert@proton.me>"]
 license = "CC0-1.0"
 repository = "https://github.com/rust-bitcoin/corepc"
 description = "Bitcoin Core JSON-RPC client"