Add keys info to generator:status and create singleCommits when enabling generator

[shuse2]

What was the problem?

This PR resolves #9068 and resolves #9067

How was it solved?

• Add generatorKey and blsKey information when returning generator_getStatus
• Update to create singleCommits when calling generator_updateStatus

How was it tested?

• Call generator_getStatus and see the response
• Call generator_updateStatus with generator which has encrypted keys and observe log
• Ensure the logic did not change for creating singleCommits

[codecov]

Codecov Report

Merging #9069 (da8747b) into release/6.0.0 (c589442) will increase coverage by 0.01%.
The diff coverage is 97.01%.

@@                Coverage Diff                @@
##           release/6.0.0    #9069      +/-   ##
=================================================
+ Coverage          83.45%   83.47%   +0.01%     
=================================================
  Files                603      604       +1     
  Lines              22770    22803      +33     
  Branches            3360     3364       +4     
=================================================
+ Hits               19003    19035      +32     
- Misses              3767     3768       +1     

Files	Coverage Δ
framework/src/engine/generator/endpoint.ts	96.72% <100.00%> (+0.14%)	⬆️
framework/src/engine/generator/generator.ts	81.88% <100.00%> (-1.85%)	⬇️
framework/src/engine/generator/schemas.ts	100.00% <ø> (ø)
...work/src/engine/generator/single_commit_handler.ts	96.55% <96.55%> (ø)

... and 1 file with indirect coverage changes