Standardize panic messages

[gandarez]

This PR standardizes all panic messages following the format: panicked: %s. Stack: %s to include stack trace.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.

Project coverage is 62.95%. Comparing base (5949ada) to head (a0df958).
Report is 2 commits behind head on develop.

Files with missing lines	Patch %	Lines
cmd/api/api.go	0.00%	1 Missing and 1 partial ⚠️
cmd/params/params.go	0.00%	1 Missing ⚠️

@@           Coverage Diff            @@
##           develop    #1149   +/-   ##
========================================
  Coverage    62.95%   62.95%           
========================================
  Files          386      386           
  Lines        16902    16902           
========================================
  Hits         10640    10640           
  Misses        5686     5686           
  Partials       576      576           

Flag	Coverage Δ
unittests	62.95% <0.00%> (ø)

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Files with missing lines	Coverage Δ
cmd/params/params.go	81.18% <0.00%> (ø)
cmd/api/api.go	46.55% <0.00%> (ø)