Add Pug tree-sitter queries

runtime/queries/pug/highlights.scm

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+(comment) @comment
+
+(
+  doctype
+  (("doctype") @keyword.storage.type)
+  ((doctype_name) @type.enum.variant)
+)
+
+; Tags
+(tag_name) @constant
+(
+  link_tag
+  ("link" @constant)
+)
+(
+  script_tag
+  ("script" @constant)
+)
+(
+  style_tag
+  ("style" @constant)
+)
+
+; Attributes
+(id) @attribute
+(class) @attribute
+(attribute_name) @attribute
+
+(quoted_attribute_value) @string
+
+; Controls
+; NOTE: The grammar currently seems to be missing the "if" conditional
+(
+  case
+  ((keyword) @keyword.control)
+  (
+    when
+    ((keyword) @keyword.control)
+  )
+)
+(
+  each
+  ((keyword) @keyword.control.repeat)
+  ((iteration_variable) @variable)
+  ((keyword) @keyword.operator)
+  (
+    else
+    ((keyword) @keyword.control.conditional)
+  )
+)
+(
+  while
+  ((keyword) @keyword.control.repeat)
+)
+
+; Mixins
+(
+  mixin_definition
+  ((keyword) @keyword.function)
+  ((mixin_name) @function.method)
+)
+(
+  mixin_use
+  (("+") @operator)
+  ((mixin_name) @function.method)
+)
+
+; Includes
+(
+  include
+  ((keyword) @keyword.directive)
+  ((filename) @string.special.path)
+)
+
+; Inheritance
+(
+  extends
+  ((keyword) @keyword.directive)
+  ((filename) @string.special.path)
+)
+(
+  block_definition
+  ((keyword) @keyword.directive)
+  ((block_name) @function.method)
+)
+(
+  block_append
+  ((keyword) @keyword.directive)
+  ((keyword) @keyword.directive)
+  ((block_name) @function.method)
+)
+(
+  block_prepend
+  ((keyword) @keyword.directive)
+  ((keyword) @keyword.directive)
+  ((block_name) @function.method)
+)
+
+; Filters
+(
+  filter
+  (":" @function.macro)
+  ((filter_name) @function.macro)
+  ((content) @special)
+)
+
+; Inline JavaScript
+(
+  unbuffered_code
+  (("-") @operator)
+)

runtime/queries/pug/injections.scm

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+((javascript) @injection.content
+  (#set! injection.language "javascript")
+)