chore(tooling): add .editorconfig file

Author: tumidi

.editorconfig

@@ -0,0 +1,16 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+end_of_line = lf
+charset = utf-8
+
+[*.y{a,}ml]
+indent_size = 2
+
+[*.md]
+trim_trailing_whitespace = false