Add beautifier config for JS code

In order to have an automated workflow to style
our code, adding now the beautifier settings of
webpack.

.jsbeautifyrc

@@ -0,0 +1,25 @@
+{
+  "js": {
+    "allowed_file_extensions": ["js", "json", "jshintrc", "jsbeautifyrc"],
+    "brace_style": "collapse",
+    "break_chained_methods": false,
+    "e4x": true,
+    "eval_code": false,
+    "end_with_newline": true,
+    "indent_char": "\t",
+    "indent_level": 0,
+    "indent_size": 1,
+    "indent_with_tabs": true,
+    "jslint_happy": false,
+    "jslint_happy_align_switch_case": true,
+    "space_after_anon_function": false,
+    "keep_array_indentation": false,
+    "keep_function_indentation": false,
+    "max_preserve_newlines": 2,
+    "preserve_newlines": true,
+    "space_before_conditional": false,
+    "space_in_paren": false,
+    "unescape_strings": false,
+    "wrap_line_length": 0
+  }
+}