feat(src): add cooling and thermal management commands

Adds a new Cooling command group with selectable fan profiles (Performance, Balanced, Quiet) and updates the CLI and logging accordingly.

- New Features
  - Introduce Cooling subcommands for setting thermal management modes
  - Implement runtime logic to apply selected fan profiles
- Enhancements
  - Extend CLI enum `Commands` to include `Cooling` and dispatch handling
  - Refine env_logger formatting to output only `[LEVEL] message`
  - Integrate cooling execution into the main command dispatch flow
- Bug Fixes
  - No bug fixes introduced in this change

src/cli.rs

@@ -32,6 +32,11 @@ pub enum Commands {
         #[command(subcommand)]
         command: PowerCommands,
     },
+    /// Cooling and thermal management
+    Cooling {
+        #[command(subcommand)]
+        command: CoolingCommands,
+    },
     /// Hardware status
     Status,
 }
@@ -91,6 +96,16 @@ pub enum PowerCommands {
     BatterySave,
 }
 
+#[derive(Subcommand, Debug)]
+pub enum CoolingCommands {
+    /// Set extreme performance fan/thermal mode
+    Performance,
+    /// Set balanced/intelligent cooling mode
+    Balanced,
+    /// Set quiet/battery saving fan mode
+    Quiet,
+}
+
 #[derive(Subcommand, Debug)]
 pub enum BatteryCommands {
     /// Set the battery charging limit (e.g., 80)