feat: add proper typing for api

src/dto/ollama.rs

@@ -0,0 +1,27 @@
+use serde::{Deserialize, Serialize};
+use utoipa::ToSchema;
+
+use crate::errors::OllamaError;
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct OllamaModels {
+    pub models: Vec<OllamaModel>,
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct OllamaModel {
+    pub name: String,
+
+    pub details: Option<OllamaModelDetails>,
+
+    pub size: Option<u64>,
+    pub digest: Option<String>,
+    pub modified_at: Option<String>,
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct OllamaModelDetails {
+    pub family: Option<String>,
+    pub parameter_size: Option<String>,
+    pub quantization_level: Option<String>,
+}