chore: add .editorconfig

Author: christian-meyer-jimdo

.editorconfig

@@ -0,0 +1,17 @@
+# top-most EditorConfig file
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+
+[*.{js,json,coffee,css,sass,scss,less,html,yml}]
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = true
+
+# Tab indentation (no size specified)
+[*.md]
+indent_style = tab
+trim_trailing_whitespace = false