Problem: no stateful precompiled contract for ica

[mmsqe]

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Thank you for your code, it's appreciated! :)

[codecov]

Codecov Report

Merging #1163 (7357456) into main (a47e6b1) will decrease coverage by 0.93%.
The diff coverage is 3.45%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1163      +/-   ##
==========================================
- Coverage   38.53%   37.61%   -0.93%     
==========================================
  Files         115      114       -1     
  Lines        9810    10077     +267     
==========================================
+ Hits         3780     3790      +10     
- Misses       5652     5907     +255     
- Partials      378      380       +2     

Files Changed	Coverage Δ
...dings/cosmos/precompile/ica/i_ica_module.abigen.go	0.00% <0.00%> (ø)
x/cronos/events/decoders.go	0.00% <0.00%> (ø)
x/cronos/events/event.go	35.52% <0.00%> (ø)
x/cronos/keeper/grpc_query.go	0.00% <0.00%> (ø)
x/cronos/keeper/precompiles/relayer.go	9.23% <0.00%> (-0.15%)	⬇️
x/cronos/keeper/precompiles/utils.go	0.00% <0.00%> (ø)
x/cronos/rpc/api.go	0.35% <0.00%> (ø)
x/icaauth/keeper/keeper.go	13.63% <0.00%> (-5.12%)	⬇️
x/icaauth/keeper/msg_server.go	100.00% <ø> (ø)
x/cronos/keeper/precompiles/ica.go	6.14% <6.14%> (ø)
... and 1 more

[yihuang]

LGTM, two minor suggestions:

• use new method CacheContext to execute queries
• maybe remove default decoder, and make converted attributes explicit.