feat(atom): implement LedgerService

[faustbrian]

Resolves #211

Missing fixtures to make use of the replayer.

[codecov]

Codecov Report

Merging #239 into master will decrease coverage by 0.84%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #239      +/-   ##
==========================================
- Coverage   83.42%   82.57%   -0.85%     
==========================================
  Files          26       24       -2     
  Lines         754      683      -71     
  Branches       92       79      -13     
==========================================
- Hits          629      564      -65     
+ Misses        122      116       -6     
  Partials        3        3              

Impacted Files	Coverage Δ
src/services/identity/address.ts	73.68% <0.00%> (-12.04%)	⬇️
src/services/identity/public-key.ts	76.92% <0.00%> (-11.32%)	⬇️
src/services/identity/private-key.ts	90.00% <0.00%> (-3.34%)	⬇️
src/services/client.ts	84.17% <0.00%> (-2.50%)	⬇️
src/services/message.ts	95.00% <0.00%> (-0.84%)	⬇️
src/services/transaction.ts	60.97% <0.00%> (-0.57%)	⬇️
src/utils/hash.ts
src/utils/crypto.ts
src/dto/transaction.ts	92.30% <0.00%> (+1.00%)	⬆️
src/services/identity/keys.ts	76.47% <0.00%> (+2.78%)	⬆️

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