Lib CallbackUtils & Remove PoolNFT callback try/catch

[hellwolf]

• CallbackUtils replaces SafeGasLibrary.
• Remove try/catch in PoolNFT callbacks.

[github-actions]

Changelog Reminder

Reminder to update the CHANGELOG.md for any of the modified packages in this PR.

• CHANGELOG.md modified
• Double check before merge

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.62%. Comparing base (60dc875) to head (75cbb57).
Report is 2 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #1979      +/-   ##
==========================================
+ Coverage   88.53%   88.62%   +0.09%     
==========================================
  Files         119      119              
  Lines        7389     7387       -2     
  Branches      977      980       +3     
==========================================
+ Hits         6542     6547       +5     
+ Misses        845      838       -7     
  Partials        2        2              

Flag	Coverage Δ
ethereum-contracts	94.22% <100.00%> (+0.18%)	⬆️
sdk-core	88.62% <100.00%> (+0.09%)	⬆️

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[d10r]

Looks good.
I was most concerned about poolMemberNFT.onDelete failing if minting hadn't succeeded. But that's safe because if not minted, poolMemberNFT.poolMemberDataByTokenId(tokenId).member will be the zero address.
This way we get rid of the issue of try/catch misleading the gas estimation, leading to failed transactions.

This PR also fixes the failing test in #1982 (I tried locally).

[github-actions]

XKCD Comic Relif

Link: https://xkcd.com/1979