feat!: align standard captures with upstream

Problem: Sharing highlight queries with upstream tree-sitter and
Helix is difficult.

Solution: Where reasonable, use capture names in tree-sitter's standard
list or Helix's Atom-style hierarchy.

Specifically:

* tree-sitter "standard capture names"
  (https://github.com/tree-sitter/tree-sitter/blob/3f44b896852eb7daaa6df4fb778c9bb52c70c815/highlight/src/lib.rs#L20-L72):

  - `@parameter` -> `@variable.parameter`
  - `@field` -> `@variable.member`
  - `@namespace` -> `@module`
  - `@float` -> `@number.float`
  - `@symbol` -> `@string.special.symbol`
  - `@string.regex` -> `@string.regexp`
  - `@text.*` -> `@markup.*` (`strong`, `italic`, `link`, `strikethrough`; with exceptions; see below)
  - `@text.title` -> `@markup.heading`
  - `@text.literal` -> `@markup.raw`
  - `@text.reference` -> `@markup.link`
  - `@text.uri` -> `@markup.link.url` (in markup links)
  - `@string.special` -> `@markup.link.label` (non-url links)
  - `@punctuation.special` -> `@markup.list` (markdown lists only; move subitems from `@text.todo`)

* Helix captures
  (https://docs.helix-editor.com/master/themes.html#syntax-highlighting):

  - `@method` -> `@function.method`
  - `@method.call` -> `@function.method.call`
  - `@text.{todo,warning,note,danger}` -> `@comment.{error,warning,hint,info,todo}`
  - `@text.diff.{add,delete,}` -> `@diff.{plus,minus,delta}`
  - `@text.uri` -> `@string.special.url` (outside markup)
  - `@preproc` -> `@keyword.directive`
  - `@define` -> `@keyword.directive`(`.define`?)
  - `@storageclass` -> `@keyword.storage`
  - `@conditional` -> `@keyword.conditional`
  - `@debug` -> `@keyword.debug`
  - `@exception` -> `@keyword.exception`
  - `@include` -> `@keyword.import`
  - `@repeat` -> `@keyword.repeat`

* cleanup

  - remove some redundant `@conceal` (but still allow it for conceal-only patterns)
  - remove obsolete `@error` (syntax linting is out of scope for this repo)
  - sort, cleanup capture list in `CONTRIBUTING.md`

1 files changed, 12 insertions, 12 deletions

diff --git a/queries/foam/highlights.scm b/queries/foam/highlights.scm
index aba33b4e8..33370df66 100644
--- a/queries/foam/highlights.scm
+++ b/queries/foam/highlights.scm
@@ -11,32 +11,32 @@
 
 ;; Macros
 (macro
-    "$" @conditional
-    (prev_scope)* @conditional
-    (identifier)* @namespace
+    "$" @keyword.conditional
+    (prev_scope)* @keyword.conditional
+    (identifier)* @module
 )
 
 
 ;; Directives
-"#" @conditional
+"#" @keyword.conditional
 (preproc_call
-    directive: (identifier)* @conditional
-    argument: (identifier)* @namespace
+    directive: (identifier)* @keyword.conditional
+    argument: (identifier)* @module
 )
 ((preproc_call
-  argument: (identifier)* @namespace) @conditional
-  (#eq? @conditional "ifeq"))
-((preproc_call) @conditional
-  (#any-of? @conditional "else" "endif"))
+  argument: (identifier)* @module) @keyword.conditional
+  (#eq? @keyword.conditional "ifeq"))
+((preproc_call) @keyword.conditional
+  (#any-of? @keyword.conditional "else" "endif"))
 
 ;; Literals
-(number_literal) @float
+(number_literal) @number.float
 (string_literal) @string
 (escape_sequence) @string.escape
 (boolean) @boolean
 
 ;; Treat [m^2 s^-2] the same as if it was put in numbers format
-(dimensions dimension: (identifier) @float)
+(dimensions dimension: (identifier) @number.float)
 
 ;; Punctuation
 [