Add rst module

Uses sphinx-mode and adds a few common bindings

Signed-off-by: Rudi Grinberg <me@rgrinberg.com>

modules/lang/rst/config.el

@@ -0,0 +1,16 @@
+(use-package! sphinx-mode
+  :init
+  (add-hook! 'rst-mode-hook #'sphinx-mode))
+
+(use-package! rst
+  :config
+  (map! :localleader
+        :map rst-mode-map
+        (:prefix ("a" . "adjust")
+          ("a" #'rst-adjust
+           "r" #'rst-adjust-region))
+        (:prefix ("t" . "table of contents")
+          ("t" #'rst-toc
+           "i" #'rst-toc-insert
+           "u" #'rst-toc-update
+           "f" #'rst-toc-follow-link))))