module: add :lang graphql

This module enables GraphQL[1] usage within Doom with extended
functionality.

[1] https://www.graphql.org

modules/lang/graphql/config.el

@@ -0,0 +1,39 @@
+;;; lang/graphql/config.el -*- lexical-binding: t; -*-
+
+(after! graphql-mode
+  (defface all-the-icons-rhodamine
+    '((t (:foreground "#E10098")))
+    "Face for GraphQL icon."
+    :group 'all-the-icons-faces)
+
+  ;; Define a doom-modeline compatiable major-mode icon
+  (after! all-the-icons
+    (setf (alist-get "graphql" all-the-icons-extension-icon-alist)
+          '(all-the-icons-fileicon "graphql" :v-adjust -0.05 :face 'all-the-icons-rhodamine))
+    (setf (alist-get "gql" all-the-icons-extension-icon-alist)
+          '(all-the-icons-fileicon "graphql" :v-adjust -0.05 :face 'all-the-icons-rhodamine))
+    (setf (alist-get 'graphql-mode all-the-icons-mode-icon-alist)
+          '(all-the-icons-fileicon "graphql" :v-adjust -0.05 :face 'all-the-icons-rhodamine)))
+  (if (featurep! +lsp)
+      (add-hook 'graphql-mode-local-vars-hook #'lsp! 'append)
+    (set-company-backend! 'graphql-mode 'company-graphql))
+
+  (add-hook 'graphql-mode-hook #'rainbow-delimiters-mode)
+  (set-docsets! 'graphql-mode :add "GraphQL Specification")
+
+  (set-electric! 'graphql-mode
+    :chars '(?\} ?\))
+    :words '("or" "and"))
+
+  (set-ligatures! 'graphql-mode
+    :null "null"
+    :true "true" :false "false"
+    :int "Int" :str "String"
+    :float "Float"
+    :bool "Bool"
+
+    :not "not"
+    :and "and" :or "or"))
+
+(use-package! graphql-doc
+  :after graphql-mode)