[FEATURE] add more type marked text support

[Lruihao]

The extended marked text syntax supports 6 types of Marked Text.

[!WARNING] This is experimental syntax highlighting for the marked texts.

==Primary==[primary]
==Secondary==[secondary]
==Success==[success]
==Info==[info]
==Warning==[warning]
==Danger==[danger]

The rendered output looks like this:

Unless you customize marked text, any unsupported type defaults to the default type.

==This is a custom type with pink color.==[pink]

The rendered output looks like this:

The HTML looks like this:

<mark class="mark-pink">This is a custom type with pink color.</mark>