3.4 Implement user-defined indicator management system and enhance chart capabilities

- Introduced a comprehensive user indicator management system in `components/charts/indicator_manager.py`, allowing users to create, edit, and manage custom indicators with JSON persistence.
- Added new default indicators in `components/charts/indicator_defaults.py` to provide users with immediate options for technical analysis.
- Enhanced the chart rendering capabilities by implementing the `create_chart_with_indicators` function in `components/charts/builder.py`, supporting both overlay and subplot indicators.
- Updated the main application layout in `app.py` to include a modal for adding and editing indicators, improving user interaction.
- Enhanced documentation to cover the new indicator system, including a quick guide for adding new indicators and detailed usage examples.
- Added unit tests to ensure the reliability and functionality of the new indicator management features.

tasks/3.4. Chart layers.md

@@ -73,9 +73,9 @@ Implementation of a flexible, strategy-driven chart system that supports technic
   - [x] 3.7 Unit test configuration system and validation
 
 - [ ] 4.0 Dashboard Integration and UI Controls
-  - [ ] 4.1 Add indicator selection checkboxes to dashboard layout
-  - [ ] 4.2 Create real-time chart updates with indicator toggling
-  - [ ] 4.3 Implement parameter adjustment controls for indicators
+  - [x] 4.1 Add indicator selection checkboxes to dashboard layout
+  - [x] 4.2 Create real-time chart updates with indicator toggling
+  - [x] 4.3 Implement parameter adjustment controls for indicators
   - [ ] 4.4 Add strategy selection dropdown for predefined configurations
   - [ ] 4.5 Update chart callback functions to handle new layer system
   - [ ] 4.6 Ensure backward compatibility with existing dashboard features