[Access] Add implementation for events data providers and account statuses data providers

[AndriiDiachuk]

Closes: #6588, #6587

In this PR EventsDataProvider and "AccountStatusesDataProvider" were implemented.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 78.06452% with 68 lines in your changes missing coverage. Please review.

Project coverage is 41.03%. Comparing base (541d744) to head (2f0142d).

Files with missing lines	Patch %	Lines
.../rest/websockets/data_providers/events_provider.go	73.94%	22 Missing and 9 partials ⚠️
...ockets/data_providers/account_statuses_provider.go	76.78%	18 Missing and 8 partials ⚠️
.../rest/websockets/data_providers/blocks_provider.go	52.63%	6 Missing and 3 partials ⚠️
...e/access/rest/websockets/data_providers/factory.go	83.33%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6766      +/-   ##
==========================================
+ Coverage   40.95%   41.03%   +0.08%     
==========================================
  Files        2093     2096       +3     
  Lines      184432   184727     +295     
==========================================
+ Hits        75528    75809     +281     
+ Misses     102582   102562      -20     
- Partials     6322     6356      +34     

Flag	Coverage Δ
unittests	41.03% <78.06%> (+0.08%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[Guitarheroua]

Both AccountStatusesResponse and EventResponse models should be aligned with the implementation of the issue #6775