Add Cole-Kripke algorithms for sleep-wake scoring

[danielvartan]

Comments in English, Spanish, or Portuguese are welcome.
Comentarios en inglés, español o portugués son bienvenidos.
Comentários em inglês, espanhol ou português são bem-vindos.

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Instructions

• Create a branch called feature/cole-kripke.
• See all the references in the basic references section before starting the development.
• The function must take an object of class tsibble (mandatory).
• The function must include an argument providing the use of the Webster rescoring method (create and export this rescoring function if one does not yet already exists).
• Add a vignette, with practical examples, explaining the features.
• All exported functions must be fully documented.
• All functions must be accompanied by unit tests (100% coverage).
• References in the documentation must be formatted in accordance with the APA (American Psychological Association) manual.
• When finished, create a PR to the main branch. Don't forget to mention this issue when creating your PR.

Materials

• Actigraphy log.
• Guidelines for Contributing.

Basic references

• Cole, R. J., Kripke, D. F., Gruen, W., Mullaney, D. J., & Gillin, J. C. (1992). Automatic sleep/wake identification from wrist activity. Sleep, 15(5), 461-469. https://doi.org/10.1093/sleep/15.5.461

Other references

• American Psychological Association. (2020). Publication manual of the American Psychological Association (7th ed.).
  https://doi.org/10.1037/0000165-000