Rename test resources bundle

[Lisrte]

Please check if the PR fulfills these requirements

• The commit message follows our guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)
• A PR or issue has been opened in all impacted repositories (if any)

Does this PR already have an issue describing the problem?

No

What kind of change does this PR introduce?

Feature

What is the current behavior?

PowsyblCoreTestReportResourceBundle defined in commons-test contains only the test base name used for unit test as defined in the migration guide.

What is the new behavior (if this is a feature change)?
Rename PowsyblCoreTestReportResourceBundle to PowsyblTestReportResourceBundle in order to use it in other repositories unit test.

Does this PR introduce a breaking change or deprecate an API?

• Yes
• No

If yes, please check if the following requirements are fulfilled

• The Breaking Change or Deprecated label has been added
• The migration steps are described in the following section

What changes might users need to make in their application due to this PR? (migration steps)

PowsyblCoreTestReportResourceBundle has been renamed to PowsyblTestReportResourceBundle.

Other information:

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[alicecaron]

We need to open a new issue on powsybl-optimizer and powsybl-open-loadflow (with see olf#1216) at least to adapt if we merge this one as they already use this class