Alex ibc spike2d

[alpe]

Spike for IBC contract integration. Super early version. Do not use for anything 🚧

Background discussions can be found on (closed PR): #231

[codecov]

Codecov Report

Merging #253 into 0.10_to_cosmos-stargate_ce9c2b2 will decrease coverage by 0.22%.
The diff coverage is 17.42%.

@@                         Coverage Diff                         @@
##           0.10_to_cosmos-stargate_ce9c2b2     #253      +/-   ##
===================================================================
- Coverage                            17.68%   17.45%   -0.23%     
===================================================================
  Files                                   32       36       +4     
  Lines                                10593    11516     +923     
===================================================================
+ Hits                                  1873     2010     +137     
- Misses                                8636     9405     +769     
- Partials                                84      101      +17     

Impacted Files	Coverage Δ
app/integration/test_common.go	0.00% <0.00%> (ø)
x/wasm/internal/types/codec.go	44.44% <0.00%> (-2.62%)	⬇️
x/wasm/internal/types/msg.pb.go	0.58% <ø> (ø)
x/wasm/internal/types/types.pb.go	0.73% <0.00%> (-0.02%)	⬇️
x/wasm/module.go	59.18% <0.00%> (+42.85%)	⬆️
x/wasm/internal/types/ibc.pb.go	1.05% <1.05%> (ø)
x/wasm/internal/types/msg.go	44.69% <8.69%> (-7.99%)	⬇️
x/wasm/internal/keeper/ibc.go	9.37% <9.37%> (ø)
app/export.go	7.59% <23.07%> (ø)
x/wasm/internal/keeper/handler_plugin.go	56.47% <26.74%> (-17.28%)	⬇️
... and 11 more

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[ethanfrey]

I see 2 things needed to finish up the IBC spike:

1. Align this spike with the spec. Either by changing the implementation, or by changing the spec. Once aligned, let's merge this before adding more functionality.
2. Implement Complete IBC Mock testing #255 after merging this to finalize the demo

[ethanfrey]

Anything you feel missing here? I am waiting til it is ready to review to give a final review on it

[alpe]

Replaced by #261