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"
  (3f44b89685/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`

queries/smali/highlights.scm

@@ -20,40 +20,40 @@
 ; Methods
 
 (method_definition
-  (method_signature (method_identifier) @method))
+  (method_signature (method_identifier) @function.method))
 
 (expression
   (opcode) @_invoke
 	(body
 	  (full_method_signature
-      (method_signature (method_identifier) @method.call)))
+      (method_signature (method_identifier) @function.method.call)))
   (#lua-match? @_invoke "^invoke"))
 
 (method_handle
   (full_method_signature
-	(method_signature (method_identifier) @method.call)))
+	(method_signature (method_identifier) @function.method.call)))
 
 (custom_invoke
-  . (identifier) @method.call
-  (method_signature (method_identifier) @method.call))
+  . (identifier) @function.method.call
+  (method_signature (method_identifier) @function.method.call))
 
 (annotation_value
   (body
-    (method_signature (method_identifier) @method.call)))
+    (method_signature (method_identifier) @function.method.call)))
 
 (annotation_value
   (body
     (full_method_signature
-      (method_signature (method_identifier) @method.call))))
+      (method_signature (method_identifier) @function.method.call))))
 
 (field_definition
 	(body
-		(method_signature (method_identifier) @method.call)))
+		(method_signature (method_identifier) @function.method.call)))
 
 (field_definition
 	(body
 	  (full_method_signature
-		  (method_signature (method_identifier) @method.call))))
+		  (method_signature (method_identifier) @function.method.call))))
 
 ((method_identifier) @constructor
   (#any-of? @constructor "<init>" "<clinit>"))
@@ -65,7 +65,7 @@
 [
   (field_identifier)
   (annotation_key)
-] @field
+] @variable.member
 
 ((field_identifier) @constant
   (#lua-match? @constant "^[%u_]*$"))
@@ -79,8 +79,8 @@
 
 ; Parameters
 
-(parameter) @parameter.builtin
-(param_identifier) @parameter
+(parameter) @variable.parameter.builtin
+(param_identifier) @variable.parameter
 
 ; Labels
 
@@ -96,14 +96,14 @@
 ((opcode) @keyword.return
   (#lua-match? @keyword.return "^return"))
 
-((opcode) @conditional
-  (#lua-match? @conditional "^if"))
+((opcode) @keyword.conditional
+  (#lua-match? @keyword.conditional "^if"))
 
-((opcode) @conditional
-  (#lua-match? @conditional "^cmp"))
+((opcode) @keyword.conditional
+  (#lua-match? @keyword.conditional "^cmp"))
 
-((opcode) @exception
-  (#lua-match? @exception "^throw"))
+((opcode) @keyword.exception
+  (#lua-match? @keyword.exception "^throw"))
 
 ((opcode) @comment
   (#eq? @comment "nop")) ; haha, anyone get it? ;)
@@ -148,7 +148,7 @@
 
 [
   ".source"
-] @include
+] @keyword.import
 
 [
   ".method"
@@ -158,12 +158,12 @@
 [
   ".catch"
   ".catchall"
-] @exception
+] @keyword.exception
 
 ; Literals
 
 (string) @string
-(source_directive (string "\"" _ @text.uri "\""))
+(source_directive (string "\"" _ @string.special.url "\""))
 (escape_sequence) @string.escape
 
 (character) @character
@@ -176,7 +176,7 @@
  (float)
  (NaN)
  (Infinity)
-] @float
+] @number.float
 
 (boolean) @boolean
 
@@ -184,7 +184,7 @@
 
 ; Misc
 
-(annotation_visibility) @storageclass
+(annotation_visibility) @keyword.storage
 
 (access_modifier) @type.qualifier
 
@@ -204,7 +204,7 @@
   "/"
 ] @punctuation.delimiter
 
-(line_directive (number) @text.underline @text.literal)
+(line_directive (number) @string.special)
 
 ; Comments