A really useful plugin for hiding away all of the metadata XML files whilst you’re developing in Sublime 3 is ToggleExclude. Check out the package listing over on PackageControl.io to see how it can really help with helping you focus on the files which matter when developing.

https://packagecontrol.io/packages/ToggleExclude

Below is my configuration file for hiding away Apex class, Trigger, Visualforce Page, Visualforce Component and Lightning Component metadata files.

{
   "conditional_file_exclude_patterns": [
      "*.cls-meta.xml",
      "*.component-meta.xml",
      "*.page-meta.xml",
      "*.trigger-meta.xml",
      "*.cmp-meta.xml"
   ],
   "enabled": true
}