WIP Ops and Storage Benchmarks

[deelawn]

WIP: moving from another repo's branch; removing unnecessary code and making this feature togglable via build tags

• Added new tests, or not needed, or not feasible
• Provided an example (e.g. screenshot) to aid review or the PR is self-explanatory
• Updated the official documentation or not needed
• No breaking changes were made, or a BREAKING CHANGE: xxx message was included in the description
• Added references to related issues and PRs
• Provided any useful hints for running manual tests
• Added new benchmarks to generated graphs, if any. More info here.

[codecov]

Codecov Report

Attention: Patch coverage is 1.96078% with 100 lines in your changes are missing coverage. Please review.

Project coverage is 54.88%. Comparing base (a03eeb3) to head (0ea751f).

Files	Patch %	Lines
benchmarking/stack.go	0.00%	28 Missing ⚠️
benchmarking/exporter.go	0.00%	19 Missing ⚠️
benchmarking/measurement.go	0.00%	15 Missing ⚠️
gnovm/pkg/gnolang/store.go	14.28%	10 Missing and 2 partials ⚠️
benchmarking/ops.go	0.00%	8 Missing ⚠️
benchmarking/timer.go	0.00%	7 Missing ⚠️
gnovm/pkg/gnolang/machine.go	0.00%	3 Missing and 3 partials ⚠️
benchmarking/init.go	0.00%	3 Missing ⚠️
gno.land/cmd/gnoland/start.go	0.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2073      +/-   ##
==========================================
- Coverage   54.96%   54.88%   -0.08%     
==========================================
  Files         481      487       +6     
  Lines       67407    67509     +102     
==========================================
+ Hits        37049    37054       +5     
- Misses      27337    27430      +93     
- Partials     3021     3025       +4     

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[deelawn]

@piux2 is taking over this