fix(cli): expose hidden structs (#1856)

closes  #1843

plugins/cli/src/error.rs

@@ -18,3 +18,5 @@ impl Serialize for Error {
         serializer.serialize_str(self.to_string().as_ref())
     }
 }
+
+pub type Result<T> = std::result::Result<T, Error>;

plugins/cli/src/lib.rs

@@ -23,8 +23,9 @@ mod error;
 mod parser;
 
 use config::{Arg, Config};
-pub use error::Error;
-type Result<T> = std::result::Result<T, Error>;
+
+pub use error::{Error, Result};
+pub use parser::{ArgData, Matches, SubcommandMatches};
 
 pub struct Cli<R: Runtime>(PluginApi<R, Config>);