Add changelog and fix lint issues

.changelog/2155171.md

@@ -0,0 +1,9 @@
+---
+applies_to: ["server","client"]
+authors: ["drganjoo"]
+references: []
+breaking: false
+new_feature: true
+bug_fix: false
+---
+Support for [rpcv2Cbor](https://smithy.io/2.0/additional-specs/protocols/smithy-rpc-v2.html) has been added, allowing services to serialize RPC payloads as CBOR (Concise Binary Object Representation), improving performance and efficiency in data transmission.

rust-runtime/inlineable/src/cbor_errors.rs

@@ -46,7 +46,7 @@ pub fn parse_error_metadata(
                 // structures that might use different types for the message field.
                 match decoder.str() {
                     Ok(message) => builder.message(message),
-                    Err(_) => builder
+                    Err(_) => builder,
                 }
             }
             _ => {