Adding a generic .editorconfig. https://editorconfig.org/

Author: ryanking

.editorconfig

@@ -0,0 +1,17 @@
+
+# EditorConfig https://EditorConfig.org
+
+root = true
+
+[*]
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[Makefile]
+indent_style = tab
+
+[*.yml]
+indent_style = space
+indent_size = 2