SparklineTheme API in React Sparkline API component

Defines Theme of the sparkline. They are

• Material - Render a sparkline with Material theme.
• Fabric - Render a sparkline with Fabric theme
• Bootstrap - Render a sparkline with Bootstrap theme
• HighContrast - Render a sparkline with HighContrast theme
• Dark - Render a sparkline with Dark theme
• Material
• Fabric
• Bootstrap
• HighContrastLight
• MaterialDark
• FabricDark
• HighContrast
• BootstrapDark
• Bootstrap4
• Tailwind
• TailwindDark
• Bootstrap5
• Bootstrap5Dark
• Fluent
• FluentDark