3.9 Enhance chart functionality with indicator management and data export features

- Updated `ChartBuilder` to support dynamic indicator integration, allowing users to specify overlay and subplot indicators for enhanced chart analysis.
- Implemented a new `get_indicator_data` method in `MarketDataIntegrator` for fetching indicator data based on user configurations.
- Added `create_export_controls` in `chart_controls.py` to facilitate data export options (CSV/JSON) for user analysis.
- Enhanced error handling and logging throughout the chart and data analysis processes to improve reliability and user feedback.
- Updated documentation to reflect new features and usage guidelines for indicator management and data export functionalities.

config/indicators/user_indicators/ema_ca5fd53d.json

@@ -1,19 +1,19 @@
 {
   "id": "ema_ca5fd53d",
-  "name": "EMA 10",
+  "name": "EMA 12",
   "description": "12-period Exponential Moving Average for fast signals",
   "type": "ema",
   "display_type": "overlay",
   "parameters": {
-    "period": 10
+    "period": 12
   },
   "styling": {
-    "color": "#ff6b35",
+    "color": "#8880ff",
     "line_width": 2,
     "opacity": 1.0,
     "line_style": "solid"
   },
   "visible": true,
   "created_date": "2025-06-04T04:16:35.455729+00:00",
-  "modified_date": "2025-06-04T04:54:49.608549+00:00"
+  "modified_date": "2025-06-06T04:14:33.123102+00:00"
 }