Add salaheldin to CODEOWNERS (#1678)

🥳

Signed-off-by: salaheldinsoliman <salaheldin_sameh@aucegypt.edu>

Author: salaheldinsoliman

CODEOWNERS

@@ -1,9 +1,11 @@
 # SPDX-License-Identifier: Apache-2.0
 
-* @seanyoung @xermicus @LucasSte
+* @seanyoung @xermicus @LucasSte @salaheldinsoliman
 src/emit/polkadot/ @xermicus
 src/emit/solana/ @LucasSte @seanyoung
+src/emit/soroban/ @salaheldinsoliman
 integration/polkadot/ @xermicus
 integration/subxt-tests/ @xermicus
 integration/solana/ @LucasSte @seanyoung
 integration/anchor/ @LucasSte @seanyoung
+integration/soroban/ @salaheldinsoliman