Add more axis initialization templates

There are the following types of linear axes in plotly:

• Auto(determines the best fit from below)
• Linear
• Log
• Date
• Category
• MultiCategory

A few init functions specifically setting mandatory properties for these axis types (e.g. category order for categorical axes) would be very beneficial.

So the functions would look like this:

static member initCategorical
	(
		CategoryOrder: StyleParam.CategoryOrder,
		// all other optional properties of linear axes
	) : Axis.LinearAxis = ...

先找出 Plotly.NET 中現有的軸類型和初始化函式，尤其是 Axis.LinearAxis，以及 issue 中提到的 StyleParam.CategoryOrder 用法。檢視選用線性軸屬性的表示方式，接著為列出的軸類型新增包含其必要屬性的初始化範本，並根據現有的軸 API 驗證每個範本。