♻️ refactor(cli): remove redundant Rules import

- remove redundant `Rules` import from several files in `src/cli`
- this change simplifies the code by removing unnecessary imports

src/cli/rules_cli/run_cli.rs

@@ -1,5 +1,5 @@
 use clap::Parser;
-use cull_gmail::{Rules, EolAction, GmailClient, Result, RuleProcessor};
+use cull_gmail::{EolAction, GmailClient, Result, RuleProcessor, Rules};
 
 #[derive(Debug, Parser)]
 pub struct RunCli {