Add Structured Logging and Config

[ar-siddiqui]

No description provided.

[ar-siddiqui]

@robgpita I need your support to modify test string values to match with new error messages.
As part of this work, we also have the opportunity to check if a certain key sentence is in the output rather than the exact same string.
For example, if missing flag key word is in the string.

[robgpita]

@ar-siddiqui Please see changes that allow for pattern matching.