[Submission Pipeline] Implement the check_if_module_directory_exists step in validation template

[nesmabadr]

Description

We need to implement the steps of validating the module info for the new submission workflow that uses the modulectl. We need to make sure that in the PR opened there is a directory {module name}/{module version}

Reasons

Support new submission pipeline for the modulectl

Acceptance Criteria

• Implement the check_if_module_directory_exists step in the new-check-module-name-version.yaml. It needs to check for the new directory format ({module name/version})

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