*: allow HF in syscalls & port local extension of System.Storage.* interops

[Turalchik]

Close #3979.

[codecov]

Codecov Report

❌ Patch coverage is 31.03448% with 20 lines in your changes missing coverage. Please review.
✅ Project coverage is 72.07%. Comparing base (29fa19b) to head (3510f1d).
⚠️ Report is 4 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/core/interop/storage/basic.go	40.00%	6 Missing and 3 partials ⚠️
pkg/interop/storage/storage.go	0.00%	8 Missing ⚠️
pkg/core/interop/storage/find.go	40.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4031      +/-   ##
==========================================
- Coverage   82.06%   72.07%   -9.99%     
==========================================
  Files         351      382      +31     
  Lines       50133    57101    +6968     
==========================================
+ Hits        41140    41154      +14     
- Misses       7262    14212    +6950     
- Partials     1731     1735       +4     

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