no main manifest attribute, in jardiff.jar

[pwagland]

When running jardiff from the 1.9.1 version, it fails to run:

> java -jar jardiff.jar api-1.jar  api-2.jar
no main manifest attribute, in jardiff.jar

META-INF/MANIFEST.MF:

Manifest-Version: 1.0
Implementation-Title: jardiff-core
Implementation-Version: 1.9.1+0-d4ef6602+20250220-2129-SNAPSHOT
Specification-Vendor: Lightbend Inc. <https://www.lightbend.com>
Specification-Title: jardiff-core
Implementation-Vendor-Id: com.lightbend
Specification-Version: 1.9.1+0-d4ef6602+20250220-2129-SNAPSHOT
Implementation-URL: https://github.com/lightbend-labs/jardiff
Implementation-Vendor: Lightbend Inc. <https://www.lightbend.com>

[pwagland]

It looks like the jardiff-core JAR file was released, instead of the jardiff-cli JAR file.

Note: This also affects the MacOSX brew installation.