feat: add WalletMnemonicList component

[luciorubeens]

Summary

Copy pasta from 3.0-slate branch.

Checklist

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

[codecov]

Codecov Report

Merging #2059 into 3.0-react will not change coverage.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           3.0-react     #2059   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
===========================================
  Files             33        34    +1     
  Lines            211       213    +2     
  Branches          33        33           
===========================================
+ Hits             211       213    +2     

Impacted Files	Coverage Δ
src/app/components/Select/Select.tsx	100.00% <100.00%> (ø)
src/app/components/Textarea/Textarea.tsx	100.00% <100.00%> (ø)
...mponents/WalletMnemonicList/WalletMnemonicList.tsx	100.00% <100.00%> (ø)

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