shutdown on error

[jelilat]

Resolves https://github.com/NethermindEth/juno/issues/336

Description

If an error is caught in checkErrChs, we immediately exit with a log message. This PR is meant to allow it to exit cleanly without a trace

Types of changes

• Bugfix (non-breaking change which fixes an issue)

[codecov[bot]]

Codecov Report

Merging #338 (c329831) into main (1543782) will not change coverage. The diff coverage is n/a.

@@            Coverage Diff            @@
##              main      #338   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           59        59           
  Lines         6737      6739    +2     
=========================================
+ Hits          6737      6739    +2     

Flag	Coverage Δ
unittests	100.00% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/felt/felt.go	100.00% <0.00%> (ø)
pkg/crypto/weierstrass/weierstrass.go	100.00% <0.00%> (ø)

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[IronGauntlets]

closing because of #359