Add .editorconfig

.editorconfig

@@ -0,0 +1,23 @@
+# EditorConfig
+# https://editorconfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+insert_final_newline = true
+
+# Matches multiple files with brace expansion notation
+# Set default charset
+[*.{lua,py}]
+charset = utf-8
+
+[*.lua]
+indent_style = space
+indent_size = 2
+
+[*.py]
+indent_style = space
+indent_size = 4