feat(documentation): Initial translation of the readme to Spanish (ub…

…lue-os#652)

* Added README-SPA

Direct copy of the English ReadMe to start translating

* Update `README-SPA.md`

* Update `CHANGELOG.md`

* Update `README-SPA.md`

* Update `README-SPA.md`

* Update `README-SPA.md`

* Update `README-SPA.md`

* Update `README-SPA.md`

* Update `README-SPA.md`

* Update `README-SPA.md`

* Update `README-SPA.md`

* Update README-SPA.md

Finished with the table of contents and the first About & Features section

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Co-authored-by: holocron.so <info@holocron.so>