feat: TotalCoin implementation

[DIGIX666]

Added TotalCoin implementation to take into account the total of a specific coin based on its denomination.

This should solve #2662

Contributors' checklist...

• 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 0% with 8 lines in your changes missing coverage. Please review.

Project coverage is 60.09%. Comparing base (bbcb2f6) to head (6e9287d).

Files	Patch %	Lines
gno.land/pkg/sdk/vm/builtins.go	0.00%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2670      +/-   ##
==========================================
- Coverage   60.11%   60.09%   -0.03%     
==========================================
  Files         560      560              
  Lines       74918    74925       +7     
==========================================
- Hits        45039    45027      -12     
- Misses      26504    26519      +15     
- Partials     3375     3379       +4     

Flag	Coverage Δ
contribs/gnodev	60.58% <ø> (-0.82%)	⬇️
contribs/gnofaucet	14.46% <ø> (-0.86%)	⬇️
gno.land	64.07% <0.00%> (-0.10%)	⬇️
gnovm	64.13% <ø> (ø)
misc/genstd	80.54% <ø> (ø)
misc/logos	19.88% <ø> (ø)
tm2	62.03% <ø> (+<0.01%)	⬆️

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[DIGIX666]

Hi @leohhhn , when you have a bit of time, could you check my code please

For the moment, I've put my PR in draft form because I don't think my approach is the right one for these reasons:

• Iteration on all accounts
• No persistence for the total result of the part. So every time the function is called, everything is recalculated.

I realised this when I saw the PR for @thinhnx-var

[thinhnx-var]

I did not see this PR after I looked at the original issue again. Thats why I pushed my PR @DIGIX666. 🙏
Btw, I see that the things you commented above is true. Because we should consider about the cost of calculating total coins.

[DIGIX666]

I did not see this PR after I looked at the original issue again. Thats why I pushed my PR @DIGIX666. 🙏
Btw, I see that the things you commented above is true. Because we should consider about the cost of calculating total coins.

No problem, I should have asked if someone was working on it first ;)