Cleanly align highlight groups with new, standardized treesitter highlight captures

[camoz]

There are some mistakes in #201, e.g. @markup.emphasis and @markup.strike do not exist upstream, they are called @markup.italic and @markup.strikethrough instead (this causes treesitter-based markdown highlighting to not work correctly currently, i.e. italics and strikethrough are not applied).

The new, standardized treesitter highlight captures seem to be stable now: nvim-treesitter/nvim-treesitter#6513

But there are quite some differences between the onedark highlight groups and the nvim-treesitter captures listed here: https://github.com/nvim-treesitter/nvim-treesitter/blob/master/CONTRIBUTING.md#highlights

Maybe it would be worth to cleanly align with upstream?

Diff between onedark and nvim-treesitter captures

• Onedark captures from https://github.com/navarasu/onedark.nvim/blob/master/lua/onedark/highlights.lua (only [email protected] section, without Old configuration section)

• Nvim-treesitter captures from https://github.com/nvim-treesitter/nvim-treesitter/blob/8f5513a1f2ec6ee5b378c2e32e53fc3c2a8f1e13/CONTRIBUTING.md#highlights

merlin@mx230:~/downloads$ diff onedark-captures.txt nvim-treesitter-captures.txt 
1d0
< @annotation
3c2
< @attribute.typescript
---
> @attribute.builtin
5a5
> @character.special
6a7,9
> @comment.documentation
> @comment.error
> @comment.note
8,9c11,12
< @comment.todo.checked
< @comment.todo.unchecked
---
> @comment.warning
> @conceal
14,17d16
< @danger
< @diff.add
< @diff.delete
< @error
19a19
> @function.call
21a22
> @function.method.call
23a25,27
> @keyword.conditional.ternary
> @keyword.coroutine
> @keyword.debug
24a29
> @keyword.directive.define
27a33
> @keyword.modifier
29a36,37
> @keyword.return
> @keyword.type
31,32d38
< @markup.environment
< @markup.environment.name
34,45c40,45
< @markup.heading.1.markdown
< @markup.heading.1.marker.markdown
< @markup.heading.2.markdown
< @markup.heading.2.marker.markdown
< @markup.heading.3.markdown
< @markup.heading.3.marker.markdown
< @markup.heading.4.markdown
< @markup.heading.4.marker.markdown
< @markup.heading.5.markdown
< @markup.heading.5.marker.markdown
< @markup.heading.6.markdown
< @markup.heading.6.marker.markdown
---
> @markup.heading.1
> @markup.heading.2
> @markup.heading.3
> @markup.heading.4
> @markup.heading.5
> @markup.heading.6
47a48
> @markup.link.label
49a51,52
> @markup.list.checked
> @markup.list.unchecked
50a54
> @markup.quote
51a56
> @markup.raw.block
55a61
> @module.builtin
57c63
< @note
---
> @nospell
61d66
< @parameter.reference
64a70,71
> @punctuation.special
> @spell
65a73
> @string.documentation
67a76,77
> @string.special
> @string.special.path
69,72c79
< @tag
< @tag.attribute
< @tag.delimiter
< @text
---
> @string.special.url
74a82
> @type.definition
79,80c87
< @warning
< 
---
> @variable.parameter.builtin

nvim-treesitter-captures.txt
onedark-captures.txt