Use our own json handle for decoding

[tolikzinovyev]

Summary

We already use our own json handle for encoding. For consistency and to guard against changes in go-algorand, use the same json handle for decoding.

[codecov-commenter]

Codecov Report

Merging #765 (732f355) into develop (a5a575e) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop     #765      +/-   ##
===========================================
+ Coverage    55.17%   55.20%   +0.02%     
===========================================
  Files           27       28       +1     
  Lines         3815     3817       +2     
===========================================
+ Hits          2105     2107       +2     
  Misses        1435     1435              
  Partials       275      275              

Impacted Files	Coverage Δ
idb/postgres/internal/encoding/encode.go	87.50% <ø> (-0.79%)	⬇️
idb/postgres/internal/encoding/decode.go	64.40% <100.00%> (+0.40%)	⬆️
idb/postgres/internal/encoding/encoding.go	100.00% <100.00%> (ø)

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[gmalouf]

Why move the jsonCodeHandle into a new encoding.go file in the same package? Readability, or is there something obvious I am missing?

[winder]

I agree with the comments Brian made some time ago. I'd rather see encoding/decoding merged into a single file with all functions side-by-side. For me, separate encode/decode files make this code more difficult to read and review, further separation would make things even more difficult.

#611 (comment)

[tolikzinovyev]

I agree with the comments Brian made some time ago. I'd rather see encoding/decoding merged into a single file with all functions side-by-side. For me, separate encode/decode files make this code more difficult to read and review, further separation would make things even more difficult.

#611 (comment)

I really think it's not a problem, as you can have two windows side-by-side, but I put encoding, decoding functions in the same file.

[winder]

LGTM