feat: add requirements parser

queries/requirements/highlights.scm

@@ -0,0 +1,47 @@
+;; packages
+
+(package) @variable
+
+(extras (package) @parameter)
+
+(path) @text.underline @string.special
+
+(url) @text.uri
+
+;; versions
+
+(version_cmp) @operator
+
+(version) @number
+
+;; markers
+
+(marker_var) @attribute
+
+(marker_op) @keyword.operator
+
+;; options
+
+(option) @function
+
+"=" @operator
+
+;; punctuation
+
+[ "[" "]" "(" ")" ] @punctuation.bracket
+
+[ "," ";" "@" ] @punctuation.delimiter
+
+[ "${" "}" ] @punctuation.special
+
+;; misc
+
+(env_var) @constant
+
+(quoted_string) @string
+
+(linebreak) @character.special
+
+(ERROR) @error
+
+(comment) @comment @spell

queries/requirements/injections.scm

@@ -0,0 +1 @@
+(comment) @comment