chore(common): update CODEOWNERS (#1248)

Author: aquint-zama

.github/CODEOWNERS

@@ -4,4 +4,14 @@
 *    @zama-ai/fhevm-devs
 
 # All CI pull request should be reviewed by at least one of the members of fhevm-devops
-.github/workflows/*release.yml	@zama-ai/fhevm-devops
+/.github/workflows/*release.yml	@zama-ai/fhevm-devops
+
+# Gateway Team ownership
+/gateway-contracts/ @zama-ai/fhevm-gateway
+/host-contracts/ @zama-ai/fhevm-gateway
+/protocol-contracts/ @zama-ai/fhevm-gateway
+/library-solidity/ @zama-ai/fhevm-gateway
+/kms-connector/ @zama-ai/fhevm-gateway
+
+# Coprocessor Team ownership
+/coprocessor/ @zama-ai/fhevm-coprocessor