Implement fallback strategy for RPM packaging

[zmotso]

Description

1. The codebase operator should implement a fallback strategy for the languages not supported by RPM. Create a new default template under build/templates/applications/rpm-package. When provisioning a codebase and the specific language implementation doesn't exist, the codebase operator should use default templates to provision assets for the RPM build process.
2. The codebase operator should check if a Makefile exists in the target repository. If it does, it should create a file named Makefile.kuberocketci to ensure it does not override the existing one.

Acceptance Criteria

• A default template is created under build/templates/applications/rpm-package/default with two files service.tmpl, spec.tmpl as a fallback strategy for unsupported lang
• Codebase-operator checks for an existing Makefile and creates Makefile.kuberocketci if Makefile exists.