Add YAML and graphviz support

uno/modules/lang/+index.org

@@ -50,3 +50,12 @@ Define language package.
     :config
     (ligature-set-ligatures 'sgml-mode '("<!--" "-->" "</" "/>")))
 #+END_SRC
+
+* YAML
+
+#+BEGIN_SRC emacs-lisp
+  (use-package yaml-mode
+    :after uno-lang
+    :config
+    (uno/add-prog-mode 'yaml-mode))
+#+END_SRC

uno/modules/lang/graphviz.org

@@ -0,0 +1,35 @@
+#+TITLE: Language - Graphviz
+#+AUTHOR: Juan Placencia
+
+* Package
+
+Define Graphviz language package.
+
+#+BEGIN_SRC emacs-lisp
+  (use-package emacs
+    :after uno-lang
+    :config
+    (provide 'uno-lang-graphviz))
+#+END_SRC
+
+* Graphviz
+
+#+BEGIN_SRC emacs-lisp
+  (use-package graphviz-dot-mode
+    :after uno-lang-graphviz
+    :general
+    (uno-mode-leader-define
+      :keymaps 'graphviz-dot-mode-map
+      "c" '(compile :which-key "Compile")
+      uno-mode-leader-key '(graphviz-dot-preview :which-key "Preview")
+      "t" '(uno/lang/graphviz/live-preview :which-key "Toggle live preview"))
+    :init
+    (defun uno/lang/graphviz/live-preview ()
+      "Toggle graphviz live preview."
+      (interactive)
+      (if graphviz-dot-auto-preview-on-save
+          (graphviz-turn-off-live-preview)
+        (progn
+          (graphviz-turn-on-live-preview)
+          (graphviz-dot-preview)))))
+#+END_SRC