Preferences: added settings for attributes.

* Moved Comments.tmPreferences into the new preferences folder.

Author: azizk

preferences/Attributes.tmPreferences

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<plist version="1.0">
+<dict>
+  <key>name</key>
+  <string>Attributes</string>
+  <key>scope</key>
+  <string>entity.name.constant.elixir</string>
+  <key>settings</key>
+  <dict>
+    <key>showInIndexedSymbolList</key>
+    <integer>1</integer>
+    <key>showInSymbolList</key>
+    <integer>1</integer>
+  </dict>
+</dict>
+</plist>