Include translations in rhc builds

[mjcr99]

• Card ID: CCT-148

Description

This PR needs #362 to be merged to properly work.

Hi team, this PR implements the required changes to include translations in rhc builds, following are the key aspects covered:

• A new target has been added to the Makefile to allow the creation of .mo files by calling make i18n target.
• The SPEC file is updated to add the generated translations to the package.

Testing

To fully test this development, the following patch is provided es_test.patch, which includes the Spanish translation .po file. Apply it and commit it in a testing commit to let the Makefile archive target include it.

After it, follow the packaging instructions to create a package

The generated package is queried to check if it contains the generated translation:

[vagrant@lv-rhel101 rhc]$ rpm -qlp /var/lib/mock/fedora-43-x86_64/result/rhc-0.3.8-1.fc43.x86_64.rpm | grep "locale"
/usr/local/share/locale/es/LC_MESSAGES/rhc.mo

After it, the package can be installed:

[vagrant@lv-rhel101 rhc]$ sudo dnf install /var/lib/mock/fedora-43-x86_64/result/rhc-0.3.8-1.fc43.x86_64.rpm

Finally, the rhc cli can be called directly, indicating the preferred language, and the output is modified:

[vagrant@lv-rhel101 rhc]$ LANGUAGE=es rhc status --help
NAME:
   rhc status - Muestra el estado de la conexión del sistema a Red Hat

USAGE:
   rhc status

DESCRIPTION:
   El comando status muestra el estado de la conexión a Red Hat Subscription Management, Red Hat Lightspeed (anteriormente Insights) y Red Hat.

OPTIONS:
   --format value, -f value  muestra el estado en formato legible por máquina (formatos compatibles: "json")
   --help, -h                show help