Show diff details in `MANIFEST.MF`

```
OLD: old.jar
NEW: new.jar

JAR │ old │ new │ diff
───────┼───────────┼───────────┼──────
class │ 12.9 MiB │ 12.9 MiB │ 0 B
other │ 375.2 KiB │ 375.2 KiB │ -8 B
───────┼───────────┼───────────┼──────
total │ 13.2 MiB │ 13.2 MiB │ -8 B

CLASSES │ old │ new │ diff
─────────┼───────┼───────┼───────────
classes │ 3308 │ 3308 │ 0 (+0 -0)
methods │ 37498 │ 37498 │ 0 (+0 -0)
fields │ 15282 │ 15282 │ 0 (+0 -0)

=================
==== JAR ====
=================

size │ diff │ path
─────────┼──────┼──────────────────────────────────────────────────
960 B │ -4 B │ ∆ META-INF/MANIFEST.MF
830 B │ -4 B │ ∆ META-INF/micrometer-registry-statsd.properties
─────────┼──────┼──────────────────────────────────────────────────
1.7 KiB │ -8 B │ (total)
```

We can show diff details in `MANIFEST.MF`. In addition, if we need to show changes in `∆ META-INF/foo.properties`?

No file, test, or entry point is named. Start by locating the archive-diff reporting code and existing handling for META-INF/MANIFEST.MF, then trace how changed archive entries are summarized. Done means the output includes the requested MANIFEST.MF diff details and the treatment of other changed .properties files is defined.

Written by the indexing model from the issue text.