Add support for EditorConfig

.editorconfig

@@ -0,0 +1,15 @@
+# =============================================================================
+# https://EditorConfig.org
+# =============================================================================
+
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+trim_trailing_whitespace = true
+insert_final_newline = true
+charset = utf-8
+
+[*.yml]
+indent_size = 2