evidence: json tags for DuplicateVoteEvidence

[tac0turtle]

Description

Add json tags to duplicate evidence

Closes: #4958

[auto-comment]

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[codecov]

Codecov Report

Merging #4959 into master will increase coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4959      +/-   ##
==========================================
+ Coverage   63.35%   63.38%   +0.03%     
==========================================
  Files         189      189              
  Lines       19583    19584       +1     
==========================================
+ Hits        12407    12414       +7     
+ Misses       6189     6184       -5     
+ Partials      987      986       -1     

Impacted Files	Coverage Δ
libs/clist/clist.go	66.66% <0.00%> (-1.52%)	⬇️
blockchain/v2/reactor.go	35.35% <0.00%> (-1.28%)	⬇️
consensus/replay.go	71.72% <0.00%> (-1.27%)	⬇️
blockchain/v0/pool.go	78.98% <0.00%> (-0.32%)	⬇️
crypto/ed25519/encoding.go	100.00% <0.00%> (ø)
consensus/state.go	71.93% <0.00%> (+0.18%)	⬆️
consensus/reactor.go	73.77% <0.00%> (+1.74%)	⬆️

[liamsi]

👍 Looks like we need also need to remove the pubkey field in the rust version too: https://github.com/informalsystems/tendermint-rs/pull/242/files#r417475910

[melekes]

lgtm