Add classfile-api module: java.lang.classfile (JEP 484) parse, generate, transform with timing instrumentation, ASM 9.11.1 comparison, version limits, JDK 24/25/26 API diff

Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_017ic4b4VQVEJWetTT1dYzyJ

classfile-api/output/08-asm-parse.txt

@@ -0,0 +1,18 @@
+$ java -cp classes:asm-9.11.1.jar... demo.AsmParse      (25.0.5+8-LTS)
+ASM sees major version 69
+  public <init>(Ljava/lang/String;)V
+  public,static fib(I)I
+  public,static sumTo(I)J
+  public greet(Ljava/lang/String;)Ljava/lang/String;
+  public pause(J)V
+  public,static boom()V
+  public,static explode([I)I
+  public calls()I
+  2 x demo/Target.fib
+  1 x indy:makeConcatWithConstants
+  1 x java/lang/IllegalStateException.<init>
+  1 x java/lang/Object.<init>
+  1 x java/lang/Thread.sleep
+PASS ASM and java.lang.classfile list identical method lines
+PASS ASM and java.lang.classfile count identical invoke targets
+exit=0