feat: Enhance context generation with new table images for VO2 Max and Heart Rate Zones

- Added functionality to generate VO2 Max and Heart Rate Zones tables in the context_generator.py.
- Integrated graph_generator to create table images with specified data and styles.
- Updated report_generator.py to pass graph_generator to context generation.
- Introduced a new method in graph_generator.py to generate table images with customizable options.
- Created test scripts for Page 5 (RMR and NEAT calculations) and Page 6 (Meal Plan calculations) using actual patient data.
- Updated Jupyter notebook metadata for better environment identification.

app/services/report_generator.py

@@ -507,7 +507,10 @@ class ReportGeneratorService:
             "gender": gender,
         }
         contexts = self.context_generator.generate_all_contexts(
-            patient_name, graphs_dict, metric_overrides=metric_overrides
+            patient_name,
+            graphs_dict,
+            metric_overrides=metric_overrides,
+            graph_generator=self.graph_generator,
         )
 
         # Step 5: Calculate analysis metrics