style: update images and URLs (#113)

* feat(images): updating and adding images

the favicon was updated and the liveness images were added

* feat(router): update login URL

the url of cuenta unica login was updated

* style: style adjustments and added links to social networks

ogtic social networks were added and the liveness style was improved

* fix: fix linter with `lint --fix`

* style: use better size and distance between images

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Co-authored-by: Gustavo Valverde <g.valverde02@gmail.com>