Add editorconfig file

.editorconfig

@@ -0,0 +1,22 @@
+# EditorConfig helps developers define and maintain consistent
+# coding styles between different editors and IDEs
+# https://editorconfig.org/
+
+
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+max_line_length = 100
+
+[*.md]
+trim_trailing_whitespace = false
+
+[*.{conf,html,py}]
+indent_size = 4