[Feature] xAxis splitLine showMinLine showMaxLine

[MeetzhDing]

What problem does this feature solve?

When use splitLine in xAxis[type=time], minSplitLine and maxSplitLine can't be hidden.

What does the proposed API look like?

like xAxisLabel showMinLabel

xAxis: {
  splitLine: {
     showMinLine: false,
     showMaxLine: true
  }
}

[Clebal]

I guess this may work also in xAxis type value, right?

[MeetzhDing]

I guess this may work also in xAxis type value, right?

Yes.

echarts/test/brush.html

xAxis: [
    {
        type: 'value',
        splitLine: {
            show: true,
            showMinLine: false,
            showMaxLine: false
        }
    }
],

before:

after:

[plainheart]

Supported in #20114