feat(modules): babe

[radkomih]

Description

Please include a summary of the changes and the related issue. Please also include relevant motivation and context,
including:

• What does this PR do?

• api
  • BabeApi_configuration
  • BabeApi_current_epoch_start
  • BabeApi_current_epoch
  • BabeApi_next_epoch
  • BabeApi_generate_key_ownership_proof
  • BabeApi_submit_report_equivocation_unsigned_extrinsic
  • metadata
  • unit tests
  • integration tests
• babe module
  • calls
    • plan_config_change
    • report_equivocation is not implemented
    • report_equivocation_unsigned is not implemented
  • storage
  • errors
  • metadata
  • unit tests (needs more coverage)
  • integration tests
  • benchmark tests
• build process
  • support building multiple templates
• gossamer integration

Use Github semantic linking to address any open issues this PR relates to or closes.

Fixes #368 #369 #371 #370

ToDo #406

Checklist:

• I have read the contributing guidelines.
• My PR title matches the Conventional Commits spec.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.
• I can start a Substrate node using the updated runtime.

[codecov]

Codecov Report

Attention: Patch coverage is 68.88757% with 523 lines in your changes are missing coverage. Please review.

Project coverage is 81.08%. Comparing base (c0a84d3) to head (798da16).

Files	Patch %	Lines
frame/babe/module.go	33.25%	263 Missing and 34 partials ⚠️
testhelpers/testhelpers.go	0.00%	52 Missing ⚠️
frame/babe/digest.go	74.81%	24 Missing and 10 partials ⚠️
primitives/types/public_key.go	0.00%	17 Missing ⚠️
api/babe/module.go	85.18%	9 Missing and 3 partials ⚠️
primitives/babe/configuration.go	68.42%	6 Missing and 6 partials ⚠️
primitives/babe/epoch.go	68.42%	6 Missing and 6 partials ⚠️
frame/babe/crypto.go	0.00%	10 Missing ⚠️
frame/babe/storage.go	66.66%	10 Missing ⚠️
frame/support/hash_storage_value.go	0.00%	8 Missing ⚠️
... and 13 more

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #405      +/-   ##
===========================================
- Coverage    83.92%   81.08%   -2.85%     
===========================================
  Files          242      270      +28     
  Lines        11692    13499    +1807     
===========================================
+ Hits          9813    10946    +1133     
- Misses        1479     2077     +598     
- Partials       400      476      +76     

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