A config to allow a custom file name#189

When I type `leetcode edit --daily`, it saves the code into a file named `2845.count-of-interesting-subarrays.rs`. However, it seems like `rust-analyzer` refuses to provide in-depth IDE features such as type and ownership checking with files having 2 dots or more in their name. Only autocomplete works. My current workaround is to symlink the file to `2845.rs` to have complete IDE features, while being able to test and submit the edited code. It would be nice to have a config to allow a custom file name.