feat(clients): add Go, Rust, C# and Dart clients for ResolveSpec and FunctionSpec

clients/resolvespec-rs/src/lib.rs

@@ -0,0 +1,12 @@
+//! Client for ResolveSpec (JSON body) and FunctionSpec endpoints.
+mod client;
+mod error;
+mod funcspec;
+mod resolvespec;
+pub mod types;
+
+pub use client::ClientBuilder;
+pub use error::{Error, Result};
+pub use funcspec::{build_headers, build_query, decode_header_value, encode_header_value, FuncSpecClient, FuncSpecOptions, Param, Params};
+pub use resolvespec::{RecordId, ResolveSpecClient};
+pub use types::*;