feat: isolates for compute heavy tasks

[1-leo]

related to #319

[codecov]

Codecov Report

❌ Patch coverage is 87.56906% with 45 lines in your changes missing coverage. Please review.
✅ Project coverage is 71.18%. Comparing base (f053c29) to head (190303d).
⚠️ Report is 52 commits behind head on master.

Files with missing lines	Patch %	Lines
...kages/ndk/lib/shared/isolates/isolate_manager.dart	77.61%	15 Missing ⚠️
...es/ndk/lib/domain_layer/entities/nip_01_utils.dart	73.68%	10 Missing ⚠️
...s/ndk/lib/domain_layer/usecases/relay_manager.dart	85.00%	6 Missing ⚠️
...in_layer/usecases/proof_of_work/proof_of_work.dart	60.00%	4 Missing ⚠️
.../lib/shared/decode_nostr_msg/decode_nostr_msg.dart	91.17%	3 Missing ⚠️
...layer/repositories/signers/nip46_event_signer.dart	0.00%	2 Missing ⚠️
...ndk/lib/domain_layer/usecases/bunkers/bunkers.dart	0.00%	2 Missing ⚠️
.../ndk/lib/data_layer/models/nip_01_event_model.dart	98.38%	1 Missing ⚠️
...ayer/repositories/signers/bip340_event_signer.dart	50.00%	1 Missing ⚠️
packages/ndk/lib/shared/nips/nip13/nip13.dart	93.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #327      +/-   ##
==========================================
+ Coverage   70.83%   71.18%   +0.35%     
==========================================
  Files         136      142       +6     
  Lines        5051     5262     +211     
==========================================
+ Hits         3578     3746     +168     
- Misses       1473     1516      +43     

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[1-leo]

• nip01 refactor
• check if nip01 refactor is compatible with https://github.com/nostrlabs-io/zap-stream-flutter

[frnandu]

don't forget to also replace Nip46EventSigner jsonDecode usage with isolate

[frnandu]

libs to maybe try if it makes sense for our pool management requirements:

• https://pub.dev/packages/isolate_manager
• https://pub.dev/packages/worker_manager