Add Editorconfig

.editorconfig

+[*]
+charset=utf-8
+end_of_line=lf
+insert_final_newline=false
+indent_style=space
+indent_size=2
+
+[*.json]
+indent_style=space
+indent_size=2
+
+[{*.kts,*.kt}]
+indent_style=space
+indent_size=2
+
+[{*.yml,*.yaml}]
+indent_style=space
+indent_size=2