serde(flatten) attribute introduces floats

[kwtalley]

Summary of Bug

When using serde(flatten) to fix the missing fields in some metadata types (since they use protobuf Oneof), the generated/compiled code introduces floats which will cause the wasm store function to fail. This issue serves to track the progress of the cosmwasm serde-json-wasm issue #43

Version

provwasm 2.0.0+

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[kwtalley]

Looks like Float support has been added to cosmwasm 1.5, but we need to wait until provenance uses wasmd 0.44, which will require cosmos-sdk 0.47+

[kwtalley]

this will be handled with #141

[kwtalley]

Resolved with #160 and serde no longer used