add: src/reference/codingstyle.md

Author: netpyoung

src/reference/codingstyle.md

@@ -0,0 +1,7 @@
+# 코딩스타일
+
+- <https://www.cliki.net/Programming%20style>
+- <https://lisp-lang.org/style-guide/>
+- [Ariel Labs Common Lisp Style Guide](http://labs.ariel-networks.com/cl-style-guide.html)
+- [Google Common Lisp Style Guide](https://google.github.io/styleguide/lispguide.xml)
+- [Tutorial on Good Lisp Programming Style](https://www.cs.umd.edu/%7Enau/cmsc421/norvig-lisp-style.pdf) by Peter Norv, Kent Pit