Add EdidProduct, as user data for kms Outputs

This is the same as `libdisplay_info::edid::VendorProduct`, but with
implementations for `Serialize`, `Eq`, etc.

src/config/mod.rs

@@ -94,6 +94,29 @@ impl From<Output> for OutputInfo {
     }
 }
 
+#[derive(Debug, Deserialize, Serialize, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub struct EdidProduct {
+    pub manufacturer: [char; 3],
+    pub product: u16,
+    pub serial: Option<u32>,
+    pub manufacture_week: i32,
+    pub manufacture_year: i32,
+    pub model_year: Option<i32>,
+}
+
+impl From<libdisplay_info::edid::VendorProduct> for EdidProduct {
+    fn from(vp: libdisplay_info::edid::VendorProduct) -> Self {
+        Self {
+            manufacturer: vp.manufacturer,
+            product: vp.product,
+            serial: vp.serial,
+            manufacture_week: vp.manufacture_week,
+            manufacture_year: vp.manufacture_year,
+            model_year: vp.model_year,
+        }
+    }
+}
+
 #[derive(Default, Debug, Deserialize, Serialize)]
 pub struct NumlockStateConfig {
     pub last_state: bool,