Update to readme, pyproject.toml, citation, disclaimer, and license file

[maruti-iitm]

This pull request primarily adds important metadata and documentation files to the repository, updates author information, and clarifies licensing and citation details. These changes help ensure proper attribution, compliance, and facilitate citation of the software and datasets.

Documentation and Legal Files:

• Added a LICENSE.md file with the MIT License, clarifying the terms under which the software may be used, modified, and distributed.
• Added a DISCLAIMER.md file detailing legal disclaimers and acknowledgments of U.S. Government and Battelle involvement.
• Removed inline license and disclaimer text from README.md to avoid redundancy, as these are now in separate files.

Citation and Metadata:

• Added a CITATION.cff file to provide standardized citation information, including authors, affiliations, preferred citation, and publication details for the associated article.

Author Information Updates:

• Updated the pyproject.toml to include full author names and email addresses for all contributors, improving transparency and contactability.

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