Allow tick label and line style customization for each axis

[poffdeluxe]

Is your feature request related to a problem? Please describe.
It would be nice to be able to independently style separate axes. So, for example, maybe have the x-axis tick labels be italicized but keep the y-axis the default.

Describe the solution you'd like
The chart components allow you to pass relevant style objects directly to the props (for example, AreaSeries has an areaSeriesStyle prop for the series styling. It would be great if the Axis component also had tickLabelStyle and tickLineStyle props

Describe alternatives you've considered
No real alternative at the present if I want individual styling

Additional context
In Canvas specifically, after we migrate from our current charting solution to Elastic Charts, we want to add additional axis configuration options (like label rotation, coloring etc) but that will require setting styling options individually for axes. elastic/kibana#44325
To be clear though, this is a future enhancement for Canvas and is not preventing us from migrating to Elastic Charts right now.

Possibly related to: #260

Checklist

• this request is checked against already exist requests
• every related Kibana issue is listed under Kibana Cross Issues list
• kibana cross issue tag is associated to the issue if any kibana cross issue is present