Move utility functions to a new package called lubritime

[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.

• Due date: TBD.

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Instructions

• mctq utility functions may be the subject of a new package called lubritime. Create this new package and start adding those features.
• Don't forget to adapt the old convert() to this package.

[danielvartan]

A package called lubritime was created. The old convert() function can be found there.