refactor: replace react-intl with react-i18next

[clucasalcantara]

Summary

Update i18n logic and structure, also replaces react-intl for i18n next

Checklist

• Documentation (if necessary)
• Tests (if necessary)
• Ready to be merged

[codecov]

Codecov Report

Merging #2087 into 3.0-react will not change coverage.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           3.0-react     #2087   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
===========================================
  Files             45        56   +11     
  Lines            298       378   +80     
  Branches          49        65   +16     
===========================================
+ Hits             298       378   +80     

Impacted Files	Coverage Δ
src/app/components/Alert/Alert.tsx	100.00% <ø> (ø)
src/app/components/Dropdown/Dropdown.tsx	100.00% <ø> (ø)
src/app/components/Form/FormLabel.tsx	100.00% <ø> (ø)
src/app/components/Select/Select.tsx	100.00% <ø> (ø)
...app/components/SideBar/SideBarItem/SideBarItem.tsx	100.00% <ø> (ø)
...ings/pages/Settings/available-settings/General.tsx	100.00% <ø> (ø)
...ins/wallets/components/SignMessage/SignMessage.tsx	100.00% <ø> (ø)
...omains/wallets/pages/ImportWallet/ImportWallet.tsx	100.00% <ø> (ø)
src/app/components/Address/Address.tsx	100.00% <100.00%> (ø)
src/app/components/Address/utils.ts	100.00% <100.00%> (ø)
... and 30 more

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[alexbarnsley]

Couple of tweaks but no show stoppers that I can see

done

[alexbarnsley]

@faustbrian I think this is ready, I don't want to force merge without your approval since you likely changed codeowners for a reason