refactor: rename passphrase to mnemonic

[faustbrian]

Resolves #340

[codecov]

Codecov Report

Merging #383 into master will increase coverage by 0.38%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #383      +/-   ##
==========================================
+ Coverage   75.55%   75.93%   +0.38%     
==========================================
  Files          57       59       +2     
  Lines        1448     1525      +77     
  Branches      131      143      +12     
==========================================
+ Hits         1094     1158      +64     
- Misses        352      365      +13     
  Partials        2        2              

Impacted Files	Coverage Δ
src/services/identity/private-key.ts	88.23% <0.00%> (-4.63%)	⬇️
src/services/identity/keys.ts	88.00% <0.00%> (-3.31%)	⬇️
src/services/transaction.ts	46.97% <0.00%> (-0.32%)	⬇️
src/utils/crypto.ts	94.44% <0.00%> (ø)
src/utils/hash.ts	45.45% <0.00%> (ø)
src/services/identity/address.ts	86.04% <0.00%> (+0.33%)	⬆️
src/services/ledger.ts	96.42% <0.00%> (+0.59%)	⬆️
src/services/identity/public-key.ts	95.65% <0.00%> (+0.65%)	⬆️
src/services/message.ts	96.29% <0.00%> (+0.84%)	⬆️
src/dto/transaction.ts	84.00% <0.00%> (+2.18%)	⬆️
... and 1 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update d74b6dd...f3b9a2a. Read the comment docs.