add CODEOWNERS to release-1.4 (#82)

Signed-off-by: Brett Logan <brett.t.logan@ibm.com>

Co-authored-by: Matthew B White <mbwhite@users.noreply.github.com>
Co-authored-by: heatherlp <40789053+heatherlp@users.noreply.github.com>

Author: 3 people

CODEOWNERS

@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: Apache-2.0
+
+# Fabric Chaincode Java Maintainers
+*    @hyperledger/fabric-chaincode-java-maintainers