feat: implement models endpoint

src/openai/models.rs

@@ -0,0 +1,43 @@
+use serde::{Deserialize, Serialize};
+
+/// The object type, which is always "model".
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum ModelObject {
+    Model,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct Model<Id> {
+    /// The model identifier, which can be referenced in the API endpoints.
+    pub id: Id,
+
+    /// The Unix timestamp (in seconds) when the model was created.
+    pub created: i64,
+
+    /// The object type, which is always "model".
+    pub object: ModelObject,
+
+    /// The organization that owns the model.
+    pub owned_by: String,
+
+    /// The date when the model will shut down, or null if not announced.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub shutdown_date: Option<String>,
+}
+
+/// The object type, which is always "list".
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum ListObject {
+    List,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ListModelsResponse<Id> {
+    /// The list of currently available models.
+    pub data: Vec<Model<Id>>,
+
+    /// The object type, which is always "list".
+    pub object: ListObject,
+}