CDD-3295: Dual Category Chart Interface

[tushortz]

Description

This PR includes the following:

• dual category chart interface generation and preview
• Segment labels used in the charts legend
• Legend positioned at the top of the chart (see single category charts)
• Background colour removed from the charts
• y-axis min and max values implemented
• Chart titles x and y axis implemented.

Fixes #CDD-3295

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Type of change

Please select the options that are relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Tech debt item (this is focused solely on addressing any relevant technical debt)

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Checklist:

• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests at the right levels to prove my change is effective
• I have added screenshots or screen grabs where appropriate
• I have added docstrings in the correct style (google)

[tushortz]

Payload used

{
  "file_format": "svg",
  "chart_height": 640,
  "chart_width": 1280,
  "x_axis": "date",
  "y_axis": "metric",
  "x_axis_title": "Dates",
  "y_axis_title": "Cases",
  "y_axis_minimum_value": 0,
  "y_axis_maximum_value": null,
  "chart_type": "stacked_bar",
  "secondary_category": "stratum",
  "legend_title": "Meningococal disease cases by week",
  "static_fields": {
    "topic": "Meningococcal-disease",
    "metric": "meningococcal-disease_cases_casesByWeek",
    "stratum": "default",
    "age": "all",
    "geography": "England",
    "geography_type": "Nation",
    "sex": "all",
    "date_from": "2023-01-01",
    "date_to": "2026-06-30"
  },
  "segments": [
    {
      "secondary_field_value": "Confirmed",
      "colour": "COLOUR_1_DARK_BLUE",
      "label": ""
    },
    {
      "secondary_field_value": "Probable",
      "colour": "COLOUR_3_DARK_PINK",
      "label": ""
    }
  ]
}

[tushortz]

[tushortz]

all changes are now on CDD-3342's MR - #3250

[sonarqubecloud]

Quality Gate failed

Failed conditions
4.6% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube Cloud