Ignored sync jobs 2 (#3317)

## Issue Addressed

Duplicate of #3269. Making this since @divagant-martian opened the previous PR and she can't approve her own PR 😄 


Co-authored-by: Diva M <divma@protonmail.com>

beacon_node/network/src/sync/manager.rs

@@ -117,7 +117,7 @@ pub enum SyncMessage<T: EthSpec> {
     /// Block processed
     BlockProcessed {
         process_type: BlockProcessType,
-        result: Result<(), BlockError<T>>,
+        result: BlockProcessResult<T>,
     },
 }
 
@@ -128,6 +128,13 @@ pub enum BlockProcessType {
     ParentLookup { chain_hash: Hash256 },
 }
 
+#[derive(Debug)]
+pub enum BlockProcessResult<T: EthSpec> {
+    Ok,
+    Err(BlockError<T>),
+    Ignored,
+}
+
 /// The result of processing multiple blocks (a chain segment).
 #[derive(Debug)]
 pub enum BatchProcessResult {
@@ -620,3 +627,18 @@ impl<T: BeaconChainTypes> SyncManager<T> {
         }
     }
 }
+
+impl<IgnoredOkVal, T: EthSpec> From<Result<IgnoredOkVal, BlockError<T>>> for BlockProcessResult<T> {
+    fn from(result: Result<IgnoredOkVal, BlockError<T>>) -> Self {
+        match result {
+            Ok(_) => BlockProcessResult::Ok,
+            Err(e) => e.into(),
+        }
+    }
+}
+
+impl<T: EthSpec> From<BlockError<T>> for BlockProcessResult<T> {
+    fn from(e: BlockError<T>) -> Self {
+        BlockProcessResult::Err(e)
+    }
+}