REFACTOR: moved caller code into agent_utils

lib/utils/agent_utils.dart

@@ -0,0 +1,66 @@
+import 'package:apidash/services/agentic_services/agent_caller.dart';
+import 'package:apidash/services/agentic_services/agents/agents.dart';
+import 'package:apidash_core/apidash_core.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+Future<String?> generateSDUICodeFromResponse({
+  required WidgetRef ref,
+  required String apiResponse,
+}) async {
+  final step1Res = await Future.wait([
+    APIDashAgentCaller.instance.call(
+      ResponseSemanticAnalyser(),
+      ref: ref,
+      input: AgentInputs(query: apiResponse),
+    ),
+    APIDashAgentCaller.instance.call(
+      IntermediateRepresentationGen(),
+      ref: ref,
+      input: AgentInputs(variables: {
+        'VAR_API_RESPONSE': apiResponse,
+      }),
+    ),
+  ]);
+  final SA = step1Res[0]?['SEMANTIC_ANALYSIS'];
+  final IR = step1Res[1]?['INTERMEDIATE_REPRESENTATION'];
+
+  if (SA == null || IR == null) {
+    return null;
+  }
+
+  print("Semantic Analysis: $SA");
+  print("Intermediate Representation: $IR");
+
+  final sduiCode = await APIDashAgentCaller.instance.call(
+    StacGenBot(),
+    ref: ref,
+    input: AgentInputs(variables: {
+      'VAR_RAW_API_RESPONSE': apiResponse,
+      'VAR_INTERMEDIATE_REPR': IR,
+      'VAR_SEMANTIC_ANALYSIS': SA,
+    }),
+  );
+  final stacCode = sduiCode?['STAC']?.toString();
+  if (stacCode == null) {
+    return null;
+  }
+
+  return sduiCode['STAC'].toString();
+}
+
+Future<String?> modifySDUICodeUsingPrompt({
+  required WidgetRef ref,
+  required String generatedSDUI,
+  required String modificationRequest,
+}) async {
+  final res = await APIDashAgentCaller.instance.call(
+    StacModifierBot(),
+    ref: ref,
+    input: AgentInputs(variables: {
+      'VAR_CODE': generatedSDUI,
+      'VAR_CLIENT_REQUEST': modificationRequest,
+    }),
+  );
+  final SDUI = res?['STAC'];
+  return SDUI;
+}