refactor: remove modules system and fix indentation

Setting a "standard" module and resource structure is too limiting, so stick to import only.

.editorconfig

@@ -0,0 +1,16 @@
+# EditorConfig is awesome: https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = false
+charset = utf-8
+trim_trailing_whitespace = true
+indent_size = 2
+indent_style = space
+
+[*.lua]
+indent_size = 4
+indent_style = tab