Preserve whitespace in self closing tags for JetBrains IDE

- https://intellij-support.jetbrains.com/hc/en-us/community/posts/207060005-Code-formatting-preserve-whitespace-in-self-closing-tags

Author: akunzai

.editorconfig

@@ -18,10 +18,12 @@ indent_style = tab
 # Visual Studio XML Project Files
 [*.{csproj,vbproj,vcxproj,vcxproj.filters,proj,projitems,shproj}]
 indent_size = 2
+ij_xml_space_inside_empty_tag = true
 
 # XML Configuration Files
 [*.{xml,config,props,targets,nuspec,resx,ruleset,vsixmanifest,vsct}]
 indent_size = 2
+ij_xml_space_inside_empty_tag = true
 
 # JSON Files
 [*.{json,json5}]