feat(i18n): add spanish translation (#1758)

* feat(l10n): add spanish translation

Translate all messages, adding full spanish localization for Ace CLI and app by @daisy, suggested by @danielweck

Related PR: daisy/ace#261

* fix: update tags to wcag21aa for rule avoid-inline-spacing (#1757)

* feat(l10n): Add spanish translation

Complete spanish translation for Ace

Suggested by @danielweck

Author: nvdaes