🚀[FEA]: Add SPDX license identifier

[mnabian]

Is this a new feature, an improvement, or a change to existing functionality?

Improvement

How would you describe the priority of this feature request

Low (would be nice)

Please provide a clear description of problem you would like to solve.

Need to add SPDX license identifier and copyright text

Describe any alternatives you have considered

No response

Additional context

No response