vm: add dynamic opcode pricing

[Turalchik]

Close #4043.

[codecov]

Codecov Report

❌ Patch coverage is 58.69018% with 164 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.12%. Comparing base (19a63bb) to head (c1bdc92).
⚠️ Report is 8 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/core/fee/opcode.go	33.88%	142 Missing and 18 partials ⚠️
pkg/vm/vm.go	97.33%	2 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4087      +/-   ##
==========================================
- Coverage   83.38%   83.12%   -0.26%     
==========================================
  Files         355      356       +1     
  Lines       42984    43418     +434     
==========================================
+ Hits        35841    36092     +251     
- Misses       5388     5553     +165     
- Partials     1755     1773      +18     

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