feature: rework PPT tuning handling more

1. Per profile, per-ac/dc
2. Do not apply unless group is enabled
3. Better reset/disable handling
4. Selecting a profile defaults PPT to off/disabled

rog-platform/src/asus_armoury.rs

@@ -2,6 +2,7 @@ use std::fs::{read_dir, File, OpenOptions};
 use std::io::{Read, Write};
 use std::path::{Path, PathBuf};
 
+use log::debug;
 use serde::{Deserialize, Serialize};
 use zbus::zvariant::{OwnedValue, Type, Value};
 
@@ -75,6 +76,15 @@ impl Attribute {
         }
     }
 
+    pub fn base_path_exists(&self) -> bool {
+        let exists = self.base_path.exists();
+        debug!(
+            "Attribute path {:?} exits? {exists}",
+            self.base_path.as_os_str()
+        );
+        exists
+    }
+
     /// Write the `current_value` directly to the attribute path
     pub fn set_current_value(&self, new_value: &AttrValue) -> Result<(), PlatformError> {
         let path = self.base_path.join("current_value");