feat(fqbn): implement json and sql interface

[lucarin91]

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• Tests for the changes have been added (for bug fixes / features)
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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 27 lines in your changes missing coverage. Please review.

Project coverage is 67.69%. Comparing base (fff8658) to head (f65c41c).

Files with missing lines	Patch %	Lines
pkg/fqbn/sql.go	0.00%	14 Missing ⚠️
pkg/fqbn/json.go	0.00%	13 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2785      +/-   ##
==========================================
- Coverage   67.76%   67.69%   -0.07%     
==========================================
  Files         238      240       +2     
  Lines       22402    22429      +27     
==========================================
+ Hits        15181    15184       +3     
- Misses       6029     6054      +25     
+ Partials     1192     1191       -1     

Flag	Coverage Δ
unit	67.69% <0.00%> (-0.07%)	⬇️

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