feat: implement api/show endpoint

examples/show_model.rs

@@ -0,0 +1,22 @@
+use ollama_rs::OllamaClient;
+use ollama_rs::types::show::ShowModelRequest;
+use std::error::Error;
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn Error>> {
+    let client = OllamaClient::default();
+    let model = "qwen3:8b";
+    
+    println!("Requesting info for model: {}", model);
+    let request = ShowModelRequest::new(model.to_string());
+    let response = client.show_model(request).await?;
+    
+    println!("Model Info:");
+    println!("  License: {}", response.license.as_deref().unwrap_or("N/A").lines().next().unwrap_or("")); // First line only
+    println!("  Modelfile: {} bytes", response.modelfile.as_ref().map(|s| s.len()).unwrap_or(0));
+    println!("  Parameters: {}", response.parameters.as_ref().map(|s| s.len()).unwrap_or(0));
+    println!("  Template: {:?}", response.template.is_some());
+    println!("  Details: {:?}", response.details);
+    
+    Ok(())
+}