feat: query block count per Evonode proposed in any given epoch

[QuantumExplorer]

Issue being fixed or feature implemented

As a user or a service to users, we would like to know how many blocks each proposer proposed in any given epoch.

What was done?

Added two queries, either to get this with a list of Pro_Tx_Hashes, or to get this with a range.
Epoch is an optional field, if epoch is not set, it will get the proposer block count for the current epoch.

How Has This Been Tested?

Added a few tests

Breaking Changes

Not breaking.

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated relevant unit/integration/functional/e2e tests
• I have added "!" to the title and described breaking changes in the corresponding section if my code contains any
• I have made corresponding changes to the documentation if needed

For repository code-owners and collaborators only

• I have assigned this pull request to a milestone

[p-m]

Hi,
How could I use this please on the command line?
TIA, Peter

[thephez]

@p-m You can see an example using gRPCurl in the docs: getEvonodesProposedEpochBlocksByIds

[p-m]

Thanks. It works well for epoch=7, but not for epoch<7. Here the error message with epoch=6:

ERROR:
  Code: Internal
  Message: query: storage: grovedb: path parent layer not found: could not get key for parent of subtree optional no tx: path key not found: key not found in Merk for get from storage: 6d

[p-m]

Thanks. It works well for epoch=7, but not for epoch<7.

Hi,
Should I fill a bug report?
Peter