Notify devices of available updates through sync endpoint

central_backend/src/ota/ota_update.rs

@@ -1,4 +1,5 @@
 use std::fmt::{Display, Formatter};
+use std::str::FromStr;
 
 #[derive(serde::Serialize, serde::Deserialize, Debug, Copy, Clone, Eq, PartialEq)]
 pub enum OTAPlatform {
@@ -13,6 +14,14 @@ impl Display for OTAPlatform {
     }
 }
 
+impl FromStr for OTAPlatform {
+    type Err = anyhow::Error;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        Ok(serde_json::from_str::<Self>(&format!("\"{s}\""))?)
+    }
+}
+
 /// Single OTA update information
 #[derive(serde::Serialize, serde::Deserialize, Debug, Clone, Eq, PartialEq)]
 pub struct OTAUpdate {