the bottom value is used, so i've removed the top `ui.help` values from all themes
also, the values are not merged, so:
```toml
"ui.help" = { modifiers = ["reversed"] }
"ui.help" = { fg = "white", bg = "black" }
```
is equal to:
```toml
"ui.help" = { fg = "white", bg = "black" }
```
* Add markup support for all Base16 themes
* Fix rose_pine `markup.link.text` attribute misname
* Add basic default markup support for all themes
* Fix cursor change color on Base16 terminal and default
* Remove old markup monokai_pro support and fix Onedark `markup.link.text` attribute misname
* Remove old markup dracula support
