add model to MistralConfig

common/src/config.rs

@@ -87,6 +87,7 @@ pub struct OllamaModelConfig {
 pub struct MistralConfig {
     #[serde(rename = "api-key")]
     pub api_key: String,
+    pub model: String,
     #[serde(rename = "system-prompt")]
     pub system_prompt: Option<String>,
 }