[FEATURE REQ] - Single Configuration YAML file with option of overriding values at run time

[GaurSumit]

Please describe the feature.

I am not sure if this is already doable in the existing setup, but would like to see if there is a possibility where we could maintain a single publisher configuration file which can be then tokenize to override the value of different environment using Azure DevOps Variable group or using a variable file in Github.

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