feat(sse): sync raw frame contracts

Author: loong10k

src/main/java/io/github/easy4j/hermes/api/sse/EndpointEventDecoder.java

@@ -0,0 +1,7 @@
+package io.github.easy4j.hermes.api.sse;
+
+/** Decodes one preserved raw SSE frame into an endpoint-specific event view. */
+@FunctionalInterface
+public interface EndpointEventDecoder<T> {
+    T decode(SseFrame frame) throws Exception;
+}