ci: Add CODEOWNERS

Author: SMadani

.github/CODEOWNERS

@@ -0,0 +1,3 @@
+# Tooling Team
+* @Vonage/server-sdk
+* @SMadani

README.md

@@ -2,7 +2,7 @@
 
 [![Maven Central](https://img.shields.io/maven-central/v/com.vonage/server-sdk-kotlin)](https://central.sonatype.com/artifact/com.vonage/server-sdk-kotlin)
 [![Build Status](https://github.com/Vonage/vonage-kotlin-sdk/actions/workflows/build.yml/badge.svg)](https://github.com/Vonage/vonage-kotlin-sdk/actions/workflows/build.yml)
-[![codecov](https://codecov.io/gh/Vonage/vonage-kotlin-sdk/graph/badge.svg?token=YNBJUD8OUT)](https://codecov.io/gh/Vonage/vonage-kotlin-sdk)<!--[![OpenSSF Scorecard](https://api.scorecard.dev/projects/github.com/Vonage/vonage-kotlin-sdk/badge)](https://scorecard.dev/viewer/?uri=github.com/Vonage/vonage-kotlin-sdk)-->
+[![codecov](https://codecov.io/gh/Vonage/vonage-kotlin-sdk/graph/badge.svg?token=YNBJUD8OUT)](https://codecov.io/gh/Vonage/vonage-kotlin-sdk)
 ![SLOC](https://sloc.xyz/github/Vonage/vonage-kotlin-sdk)
 [![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-2.1-4baaaa.svg)](CODE_OF_CONDUCT.md)
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](LICENSE.txt)