feat: Enhanced SyncYomi with Robust Locking Mechanism

- Introduced `LockFile` data class to manage sync status and ownership.
- Enumerated `SyncStatus` to clearly indicate the stage of synchronization: Pending, Syncing, or Success.
- Implemented a new `beforeSync` method utilizing `OkHttpClient` for secure HTTP calls to manage the lock file.
- Added JSON serialization for lock file management and status updates.
- Implemented exponential backoff strategy to handle concurrent sync attempts and reduce race conditions.
- Added comprehensive logging for debugging and monitoring sync processes.

This update enhances the reliability and concurrency handling of SyncYomi's synchronization process, ensuring users experience seamless and efficient data syncing in a self-hosted environment.

Signed-off-by: KaiserBh <kaiserbh@proton.me>

domain/src/main/java/tachiyomi/domain/sync/SyncPreferences.kt

@@ -2,6 +2,7 @@ package tachiyomi.domain.sync
 
 import tachiyomi.core.preference.Preference
 import tachiyomi.core.preference.PreferenceStore
+import java.util.UUID
 
 class SyncPreferences(
     private val preferenceStore: PreferenceStore,
@@ -22,4 +23,18 @@ class SyncPreferences(
         Preference.appStateKey("google_drive_refresh_token"),
         "",
     )
+
+    fun uniqueDeviceID(): String {
+        val uniqueIDPreference = preferenceStore.getString("unique_device_id", "")
+
+        // Retrieve the current value of the preference
+        var uniqueID = uniqueIDPreference.get()
+        if (uniqueID.isBlank()) {
+            uniqueID = UUID.randomUUID().toString()
+            uniqueIDPreference.set(uniqueID)
+        }
+
+        return uniqueID
+    }
+
 }