feat: added theme setting options - dark mode, palette

[syntaxlexx]

Summary

Added the config options for themes

Issue

https://github.com/asantibanez/livewire-charts/issues/44 https://github.com/asantibanez/livewire-charts/issues/3

Type of Change

• [ ] :rocket: New Feature Added themes support
• dark/light mode
• palettes Currently, apex charts have added options to swap themes

theme: {
      mode: 'light', 
      palette: 'palette1', 
      monochrome: {
          enabled: false,
          color: '#255aee',
          shadeTo: 'light',
          shadeIntensity: 0.65
      },
  }

This PR sets the theme.mode and theme.palette options

Screenshot/Video

[Provide a screenshot or video that describes the change if applicable]

[devajmeireles]

Hey! @asantibanez Do you have any expectations about when this PR will be merged?

[mbardelmeijer]

@asantibanez would love to see support for this as well. If there is anything I can do to help out let me know!

[phuclh]

@asantibanez any chances to merge this PR? Thank you!

[asantibanez]

Looks great @syntaxlexx. It's been a long wait for this to be merged in.

Merging.