The script new.sh generates a wrong package for test classes

Description

The script new.sh creates test classes with a wrong package if the generator name contains dashes.

openapi-generator version

Since the new.sh was introduced.

Command line used for generation

./new.sh -n java-something -s -t

Steps to reproduce

Execute:
./new.sh -n java-something -s -t

The script generates the class:
modules/openapi-generator/src/test/java/org/openapitools/codegen/java-something/JavaSomethingServerCodegenModelTest.java

that has an invalid character in its package.

Suggest a fix

Ideally, the script should generate the classes in the package

modules/openapi-generator/src/test/java/org/openapitools/codegen/java/something

or, at least, it should state that, with the current implementation, a dash in the generator name is not supported by this script.

Start with new.sh and reproduce the issue using ./new.sh -n java-something -s -t. Inspect how the generator name becomes the test package, then verify that the generated Java test class has a valid package path without the dash, or that the script clearly reports the limitation.