[Access] Test Execution Data db pruning functionality on Access/Observer nodes

[UlyanaAndrukhiv]

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Closes #6002 Closes #6113

Context

In this pull request:

• Added support for the pruner for Access and Observer nodes.
• Implemented blobs tracking into execution data downloader.
• Changed creating blob record key for execution data tracker using BigEndian for blockHeight part of key.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 6.41711% with 175 lines in your changes missing coverage. Please review.

Project coverage is 41.58%. Comparing base (3126f9a) to head (55fb3fa).

Files	Patch %	Lines
cmd/observer/node_builder/observer_builder.go	0.00%	82 Missing :warning:
cmd/access/node_builder/access_node_builder.go	0.00%	71 Missing :warning:
...ule/executiondatasync/execution_data/downloader.go	26.66%	22 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6109      +/-   ##
==========================================
- Coverage   41.61%   41.58%   -0.03%     
==========================================
  Files        1973     1973              
  Lines      139355   139481     +126     
==========================================
+ Hits        57990    58005      +15     
- Misses      75343    75456     +113     
+ Partials     6022     6020       -2     

Flag	Coverage Δ
unittests	41.58% <6.41%> (-0.03%)	:arrow_down:

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