Add temporary TransportMetadata class for HTTP+JSON

Author: kabir

tck/src/main/java/org/wildfly/extras/a2a/server/jakarta/tck/TempHttpJsonTransportMetadata.java

@@ -0,0 +1,12 @@
+package org.wildfly.extras.a2a.server.jakarta.tck;
+
+import io.a2a.server.TransportMetadata;
+import io.a2a.spec.TransportProtocol;
+
+public class TempHttpJsonTransportMetadata implements TransportMetadata {
+    @Override
+    public String getTransportProtocol() {
+        return TransportProtocol.HTTP_JSON.asString();
+    }
+
+}

tck/src/main/resources/META-INF/services/io.a2a.server.TransportMetadata

@@ -0,0 +1 @@
+org.wildfly.extras.a2a.server.jakarta.tck.TempHttpJsonTransportMetadata