use tabs over spaces

.editorconfig

@@ -1,22 +1,16 @@
-root = true
-
 [*]
 charset = utf-8
 end_of_line = lf
 insert_final_newline = true
 trim_trailing_whitespace = true
 
-[*.{rs}]
-indent_style = space
-indent_size = 4
-
 [*.{c,h,cpp,hpp}]
-indent_style = space
-indent_size = 4
+indent_style = tab
+indent_size = tab
 
 [makefile]
 indent_style = tab
-indent_size = 2
+indent_size = tab
 
 [*.{yaml,json}]
 indent_style = space