test(tokenfactory)!: integration test core logic with a real smart contract using nibiru-std

[Unique-Divine]

Description

This pull request adds tests to the x/tokenfactory module using protobuf
types generated in Rust converted into wasmvmtypes.StargateMsg
(CosmosMsg::Stargate in CosmWasm).

• Add cosmwasm_1_2 and other CosmWasm "capabilities" to app/keepers.go
• Adds smart contract as test fixture
• Test CosmosMsg::Stargate happy paths using raw json inputs

Purpose

• The tests serve as useful working examples for smart contract developers on Nibiru.
• The tests also verify an end-to-end fashion that much of the logic in nibiru-std and
  contracts/nibi-stargate works as intended.
• Closes [epic] feat: "tokenfactory" module #1584
• Related to feat(wasm): Create a Rust package to call module TxMsgs with CosmosMsg::StargateMsg #1580

[codecov]

Codecov Report

Merging #1638 (6950f7e) into master (fd58bc3) will decrease coverage by 0.31%.
Report is 2 commits behind head on master.
The diff coverage is 62.74%.

@@            Coverage Diff             @@
##           master    #1638      +/-   ##
==========================================
- Coverage   74.52%   74.22%   -0.31%     
==========================================
  Files         177      183       +6     
  Lines       14652    14981     +329     
==========================================
+ Hits        10919    11119     +200     
- Misses       3112     3231     +119     
- Partials      621      631      +10     

Files	Coverage Δ
app/keepers.go	99.20% <100.00%> (ø)
x/common/testutil/path.go	100.00% <100.00%> (ø)
x/perp/v2/client/cli/gen_market.go	81.95% <ø> (-0.27%)	⬇️
x/tokenfactory/keeper/grpc_query.go	100.00% <100.00%> (+8.10%)	⬆️
x/common/testutil/events.go	52.38% <87.50%> (ø)
x/perp/v2/types/msgs.go	91.71% <88.23%> (-0.39%)	⬇️
x/perp/v2/keeper/msg_server.go	77.08% <0.00%> (-14.28%)	⬇️
x/perp/v2/keeper/settlement.go	76.72% <78.12%> (+21.72%)	⬆️
x/perp/v2/client/cli/tx.go	63.90% <0.00%> (-8.65%)	⬇️

... and 4 files with indirect coverage changes