Feat: Add header

[alcercu]

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[jaybuidl]

Borked build: https://app.netlify.com/sites/kleros-v2/deploys/6250822cbf0186006b3fad4b#L240

@parcel/core: Failed to resolve 'core-js/modules/es.array.filter.js' from './node_modules/@parcel/transformer-js/lib/JSTransformer.js'

└─ @kleros/kleros-v2-web@workspace:web
   └─ @kleros/ui-components-library@npm:0.1.5 [dab97] (via npm:^0.1.5 [dab97])
      ├─ simplebar@npm:5.3.6 (via npm:^5.3.6)
      └─ simplebar-react@npm:2.3.6 [c3042] (via npm:^2.3.6 [c3042])
         └─ simplebar@npm:5.3.6 (via npm:^5.3.6)