Added ps() API

Signed-off-by: Amith Koujalgi <koujalgi.amith@gmail.com>

docs/docs/apis-extras/ps.md

@@ -0,0 +1,30 @@
+---
+sidebar_position: 4
+---
+
+# PS
+
+This API provides a list of running models and details about each model currently loaded into memory.
+
+This API corresponds to the [PS](https://github.com/ollama/ollama/blob/main/docs/api.md#list-running-models) API.
+
+```java
+package io.github.ollama4j.localtests;
+
+import io.github.ollama4j.OllamaAPI;
+import io.github.ollama4j.exceptions.OllamaBaseException;
+import io.github.ollama4j.models.ps.ModelsProcessResponse;
+
+import java.io.IOException;
+
+public class Main {
+    public static void main(String[] args) {
+
+        OllamaAPI ollamaAPI = new OllamaAPI("http://localhost:11434");
+
+        ModelsProcessResponse response = ollamaAPI.ps();
+
+        System.out.println(response);
+    }
+}
+```