feat: Add serde feature to derive Serialize and Deserialize on all Protobuf definitions

[romac]

Closes: #144

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +40.62 🎉

Comparison is base (d28ea7a) 50.54% compared to head (6a7c653) 91.17%.

Additional details and impacted files

@@             Coverage Diff             @@
##           master     #145       +/-   ##
===========================================
+ Coverage   50.54%   91.17%   +40.62%     
===========================================
  Files          23        7       -16     
  Lines        8034     1700     -6334     
  Branches       86        0       -86     
===========================================
- Hits         4061     1550     -2511     
+ Misses       3616      150     -3466     
+ Partials      357        0      -357     

Flag	Coverage Δ
go	?
rust	91.17% <0.00%> (-0.98%)	⬇️
typescript	?

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
rust/src/cosmos.ics23.v1.rs	13.41% <0.00%> (-3.78%)	⬇️

... and 16 files with indirect coverage changes

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[romac]

CI failure is due to Codecov, I think we can just ignore it.

[romac]

This should only require a patch version bump to 0.10.1 since adding trait impls for serde cannot cause compilation failures in downstream code afaik.

Alternatively, we could omit the derived serialization impls on the ibc.core.commitment protos in ibc-proto but that might break downstream code for those who rely on it.

Let me know what you think

[romac]

Superseded by #146 which brings ProtoJSON-compatible Serialize and Deserialize instances, as per @hdevalence's suggestion.