minimal fees

[modship]

• [x] document all added functions
• [ ] try in sandbox /simulation/labnet
  • [ ] if part of node-launch, checked using the resync_check flag
• [x] unit tests on the added/changed features
  • [x] make tests compile
  • [x] make tests pass
• [x] add logs allowing easy debugging in case the changes caused problems
• [x] if the API has changed, update the API specification

Ownership: Massa Foundation

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 62.16216% with 28 lines in your changes are missing coverage. Please review.

Project coverage is 71.78%. Comparing base (df156f3) to head (87c07e3). Report is 2 commits behind head on main.

Files	Patch %	Lines
massa-client/src/cmds.rs	0.00%	15 Missing :warning:
massa-api/src/public.rs	87.87%	4 Missing :warning:
massa-grpc/src/stream/send_operations.rs	40.00%	3 Missing :warning:
massa-node/src/main.rs	0.00%	3 Missing :warning:
massa-api-exports/src/node.rs	0.00%	1 Missing :warning:
massa-grpc/src/config.rs	0.00%	1 Missing :warning:
massa-grpc/src/public.rs	91.66%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #4664 +/- ## ======================================= Coverage 71.78% 71.78% ======================================= Files 291 291 Lines 51642 51642 ======================================= Hits 37069 37069 Misses 14573 14573 ```

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