cli: unify 'contract deploy' and 'contract invoke*'

[AnnaShaleva]

Close #1887

Depends on #1914

[roman-khimov]

Rebase, please.

[roman-khimov]

I also don't really like returning sender from invokeWithArgs, but looks like it's not easy to avoid this at the moment.

[AnnaShaleva]

I also don't really like returning sender from invokeWithArgs, but looks like it's not easy to avoid this at the moment.

The other option is to get the sender from context, but this will result in getAccFromContext's code duplication.

[codecov]

Codecov Report

Merging #1915 (76de4b9) into master (402cd2a) will increase coverage by 0.10%.
The diff coverage is 80.00%.

❗ Current head 76de4b9 differs from pull request most recent head e48eb10. Consider uploading reports for the commit e48eb10 to get more accurate results

@@            Coverage Diff             @@
##           master    #1915      +/-   ##
==========================================
+ Coverage   82.89%   82.99%   +0.10%     
==========================================
  Files         289      289              
  Lines       22872    22856      -16     
==========================================
+ Hits        18959    18970      +11     
+ Misses       2717     2690      -27     
  Partials     1196     1196              

Impacted Files	Coverage Δ
cli/smartcontract/smart_contract.go	87.09% <80.00%> (+1.64%)	⬆️
pkg/services/oracle/request.go	53.23% <0.00%> (+4.31%)	⬆️
pkg/services/oracle/oracle.go	90.90% <0.00%> (+11.36%)	⬆️

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