feat: add <Spinner> component

[brenopolanski]

Summary

Checklist

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

[codecov]

Codecov Report

Merging #2119 into 3.0-react will not change coverage.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##           3.0-react     #2119    +/-   ##
============================================
  Coverage     100.00%   100.00%            
============================================
  Files             45        80    +35     
  Lines            298       639   +341     
  Branches          49       100    +51     
============================================
+ Hits             298       639   +341     

Flag	Coverage Δ
#unit	100.00% <100.00%> (?)

Impacted Files	Coverage Δ
src/app/components/Card/Card.tsx	100.00% <ø> (ø)
src/app/components/Card/CardControl.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)
src/app/components/StepIndicator/StepIndicator.tsx	100.00% <ø> (ø)
src/domains/settings/pages/Settings/Settings.tsx	100.00% <ø> (ø)
...ings/pages/Settings/available-settings/General.tsx	100.00% <ø> (ø)
...s/wallets/components/MnemonicList/MnemonicList.tsx	100.00% <ø> (ø)
src/app/components/Address/Address.tsx	100.00% <100.00%> (ø)
... and 85 more

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