feat: series style [Issue-116]

[hkang1]

Add support for overriding individual data series with a specific line style.

NOTE: out-of-filter-range (grey typically), NaN, -Inf, and +Inf styles will still supersede the series colors. This is the same behavior for the default series color.

Sample config for a chart that is rendering 10 lines.

const config = { 
  style: {
    data: {
      series: [
        undefined,
        { lineWidth: 2, strokeStyle: 'rgba(255, 0, 0, 1.0)' },
        undefined,
        { lineWidth: 2, strokeStyle: 'rgba(0, 255, 0, 1.0)' },
        undefined,
        { lineWidth: 2, strokeStyle: 'rgba(255, 150, 0, 1.0)' },
      ],
    },
  },
};

first series = default
2nd = red
3rd = default
4th = green
5th = default
6th = orange
all other = default

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