Crypto: Compile libsodium with cgo

[id-ms]

Summary

Test Plan

[codecov]

Codecov Report

Merging #4785 (e958337) into master (35bcd35) will increase coverage by 0.02%.
The diff coverage is 82.05%.

@@            Coverage Diff             @@
##           master    #4785      +/-   ##
==========================================
+ Coverage   53.74%   53.77%   +0.02%     
==========================================
  Files         433      435       +2     
  Lines       54050    54123      +73     
==========================================
+ Hits        29049    29104      +55     
- Misses      22759    22776      +17     
- Partials     2242     2243       +1     

Impacted Files	Coverage Δ
crypto/batchverifier.go	100.00% <ø> (ø)
crypto/curve25519.go	69.23% <ø> (+7.41%)	⬆️
crypto/vrf.go	100.00% <ø> (+23.07%)	⬆️
crypto/libsodiumimpl.go	81.57% <81.57%> (ø)
crypto/libsodiumimpl_arm64.go	81.57% <81.57%> (ø)
crypto/rand.go	42.85% <100.00%> (+13.44%)	⬆️
ledger/blockqueue.go	85.63% <0.00%> (-2.88%)	⬇️
util/rateLimit.go	82.35% <0.00%> (-0.99%)	⬇️
ledger/tracker.go	78.05% <0.00%> (-0.85%)	⬇️
ledger/acctupdates.go	68.99% <0.00%> (-0.25%)	⬇️
... and 3 more

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