feat: add PassThrough method to pass on the code and properties

[Gogomoe]

What's changed and what's your intention?

eris.PassThrough is almost like eris.Wrap, but it will copy the original error code and properties. (looks like only add a new message)
Therefore, we can use eris.PassThrough when we want to add an additional message but don't want to override the underlying status. (e.g. pass through the error in modeltx.Query)

I guess this method will have lots of use cases. So the function name eris.PassThrough seems a bit long. And idea? eris.Pass?

Checklist

• I have written the necessary docs and comments
• I have added necessary unit tests and integration tests

Refer to a related PR or issue link (optional)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.01%. Comparing base (78185bb) to head (9ba21be).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #29      +/-   ##
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+ Coverage   86.74%   88.01%   +1.26%     
==========================================
  Files           4        4              
  Lines         596      609      +13     
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+ Hits          517      536      +19     
+ Misses         73       68       -5     
+ Partials        6        5       -1     

Flag	Coverage Δ
unittests	88.01% <100.00%> (+1.26%)	⬆️

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[wjf3121]

LGTM! I like this idea, good stuff!

[lukeraphael]

This is very useful, there were several times where I wish we had this function. About naming - how about extend? 😆