Implemented SaveObject, LLMModel class & OllamaProvider

packages/genai/lib/llm_input_payload.dart

@@ -0,0 +1,59 @@
+import 'llm_config.dart';
+
+class LLMInputPayload {
+  String endpoint;
+  String credential;
+  String systemPrompt;
+  String userPrompt;
+  Map<String, LLMModelConfiguration> configMap;
+
+  LLMInputPayload({
+    required this.endpoint,
+    required this.credential,
+    required this.systemPrompt,
+    required this.userPrompt,
+    required this.configMap,
+  });
+
+  LLMInputPayload clone() {
+    Map<String, LLMModelConfiguration> cmap = {};
+    for (final k in configMap.keys) {
+      cmap[k] = configMap[k]!.clone();
+    }
+    return LLMInputPayload(
+      endpoint: endpoint,
+      credential: credential,
+      systemPrompt: systemPrompt,
+      userPrompt: userPrompt,
+      configMap: cmap,
+    );
+  }
+
+  static Map toJSON(LLMInputPayload payload) {
+    Map cmap = {};
+    for (final e in payload.configMap.entries) {
+      cmap[e.key] = e.value.toJson();
+    }
+    return {
+      'endpoint': payload.endpoint,
+      'credential': payload.credential,
+      'system_prompt': payload.systemPrompt,
+      'user_prompt': payload.userPrompt,
+      'config_map': cmap,
+    };
+  }
+
+  static LLMInputPayload fromJSON(Map json) {
+    Map<String, LLMModelConfiguration> cmap = {};
+    for (final k in json['config_map'].keys) {
+      cmap[k] = LLMModelConfiguration.fromJson(json['config_map'][k]);
+    }
+    return LLMInputPayload(
+      endpoint: json['endpoint'],
+      credential: json['credential'],
+      systemPrompt: json['system_prompt'],
+      userPrompt: json['user_prompt'],
+      configMap: cmap,
+    );
+  }
+}