feat(agents): Implement Serialize and Deserialize for chat messages

Persist, retry later, evaluate it completions in a script, you name it.

swiftide-core/src/chat_completion/chat_message.rs

@@ -1,6 +1,8 @@
+use serde::{Deserialize, Serialize};
+
 use super::tools::{ToolCall, ToolOutput};
 
-#[derive(Clone, strum_macros::EnumIs, PartialEq, Debug)]
+#[derive(Clone, strum_macros::EnumIs, PartialEq, Debug, Serialize, Deserialize)]
 pub enum ChatMessage {
     System(String),
     User(String),

swiftide-core/src/chat_completion/tools.rs

@@ -1,7 +1,8 @@
 use derive_builder::Builder;
+use serde::{Deserialize, Serialize};
 
 /// Output of a `ToolCall` which will be added as a message for the agent to use.
-#[derive(Debug, Clone, PartialEq)]
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
 #[non_exhaustive]
 pub enum ToolOutput {
     /// Adds the result of the toolcall to messages
@@ -39,7 +40,7 @@ impl std::fmt::Display for ToolOutput {
 }
 
 /// A tool call that can be executed by the executor
-#[derive(Clone, Debug, Builder, PartialEq)]
+#[derive(Clone, Debug, Builder, PartialEq, Serialize, Deserialize)]
 #[builder(setter(into, strip_option))]
 pub struct ToolCall {
     id: String,