♻️ refactor(cli): restructure rules CLI

- move rules_cli.rs to config_cli/rules_cli.rs
- remove update command

src/config_cli/rules_cli.rs

@@ -0,0 +1,38 @@
+use clap::{Parser, Subcommand};
+use cull_gmail::{Config, Error};
+
+mod add_cli;
+mod rm_cli;
+
+use add_cli::AddCli;
+use rm_cli::RmCli;
+
+#[derive(Debug, Subcommand)]
+pub enum RulesCommands {
+    /// List the rules configured and saved in the config file
+    #[clap(name = "list")]
+    List,
+    /// Add a rules to the config file
+    #[clap(name = "add")]
+    Add(AddCli),
+    /// Remove a rule from the config file
+    #[clap(name = "remove", alias = "rm")]
+    Remove(RmCli),
+}
+
+#[derive(Debug, Parser)]
+pub struct RulesCli {
+    /// Configuration commands
+    #[command(subcommand)]
+    command: RulesCommands,
+}
+
+impl RulesCli {
+    pub fn run(&self, config: Config) -> Result<(), Error> {
+        match &self.command {
+            RulesCommands::List => config.list_rules(),
+            RulesCommands::Add(add_cli) => add_cli.run(config),
+            RulesCommands::Remove(rm_cli) => rm_cli.run(config),
+        }
+    }
+}