Add jep511 module: module import declarations on JDK 25 and 27

Runnable sources, deliberate compile failures, three small modules and nine captured transcripts for import module (JEP 511).

Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01TF9JWFvJSNm6HVzswzZU5a

jep511/multi/demo.noreq/demo/NoReq.java

@@ -0,0 +1,9 @@
+package demo;
+
+import module java.sql;       // demo.noreq never says "requires java.sql"
+
+public class NoReq {
+    public static void main(String[] args) {
+        System.out.println(Connection.TRANSACTION_NONE);
+    }
+}

jep511/multi/demo.noreq/module-info.java

@@ -0,0 +1 @@
+module demo.noreq { }