feat: add editorconfig file

.editorconfig

@@ -0,0 +1,13 @@
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+# 2 spaces indentation
+[*.lua]
+indent_size = 2
+indent_style = space