Enhance retrieveMetadata() with genome list file input option

[AbhirupaGhosh]

Updated retrieveMetadata() to allow reading from a specified file if provided. Added checks for file existence and trimmed whitespace from genome IDs. This is the only defining step for the restricted list of genomes that the user is willing to use to build a model.

An example application is benchmarking using specific genomes.

Description

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• Feature (adds or updates new capabilities)
• Bug fix (fixes an issue).
• Enhancement (adds functionality).
• Breaking change (these changes would cause existing functionality to not work as expected).

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