fix: add routing for sdk messages for staking/distribution and simulate

[xlab]

1. Overview

When adding LSM forked version for default staking and distribution packages, the original SDK messages are not handled and their routing was impossible on the current testnet. The following messages were affected:

From staking:

• cosmos.staking.v1beta1.MsgCreateValidator
• cosmos.staking.v1beta1.MsgEditValidator
• cosmos.staking.v1beta1.MsgDelegate
• cosmos.staking.v1beta1.MsgBeginRedelegate
• cosmos.staking.v1beta1.MsgUndelegate
• cosmos.staking.v1beta1.MsgCancelUnbondingDelegation
• cosmos.staking.v1beta1.MsgUnbondValidator

From distribution:

• cosmos.distribution.v1beta1.MsgSetWithdrawAddress
• cosmos.distribution.v1beta1.MsgWithdrawDelegatorReward
• cosmos.distribution.v1beta1.MsgWithdrawValidatorCommission
• cosmos.distribution.v1beta1.MsgFundCommunityPool

2. Implementation details

This PR adds a thin wrapper around MsgServer that routes all "legacy" messages into the new handler, i.e. cosmos.staking.* gets routed as lsnative.staking.*.

It also adds a parallel suite of simulation operations into integration tests to simulate interaction using clients that send usual cosmos.staking.* and cosmos.distribution.* messages - e.g. Keplr

3. How to test/use

Clone the repo, then:

cd x/lsnative/staking
go test -v ./...

cd -; x/lsnative/distribution
go test -v ./...

Without fixes to routing and a wrapper, the simulation tests would fail with errors like this:

--- FAIL: TestSimulateSdkMsgBeginRedelegate (0.00s)
    sdk_operations_test.go:284:
        	Error Trace:	/Users/xlab/dev/persistence/persistence-sdk/x/lsnative/staking/simulation/sdk_operations_test.go:284
        	Error:      	Received unexpected error:

        	            	github.com/cosmos/cosmos-sdk/x/auth/tx.DefaultTxDecoder.func1
        	            		/Users/xlab/go/pkg/mod/github.com/cosmos/cosmos-sdk@v0.46.11/x/auth/tx/decoder.go:42
        	            	github.com/cosmos/cosmos-sdk/baseapp.(*BaseApp).runTx
        	            		/Users/xlab/go/pkg/mod/github.com/cosmos/cosmos-sdk@v0.46.11/baseapp/baseapp.go:660
        	            	github.com/cosmos/cosmos-sdk/baseapp.(*BaseApp).SimDeliver
        	            		/Users/xlab/go/pkg/mod/github.com/cosmos/cosmos-sdk@v0.46.11/baseapp/test_helpers.go:35
        	            	github.com/cosmos/cosmos-sdk/x/simulation.GenAndDeliverTx
        	            		/Users/xlab/go/pkg/mod/github.com/cosmos/cosmos-sdk@v0.46.11/x/simulation/util.go:118
        	            	github.com/cosmos/cosmos-sdk/x/simulation.GenAndDeliverTxWithRandFees
        	            		/Users/xlab/go/pkg/mod/github.com/cosmos/cosmos-sdk@v0.46.11/x/simulation/util.go:97
        	            	github.com/persistenceOne/persistence-sdk/v2/x/lsnative/staking/simulation.SimulateSdkMsgBeginRedelegate.func1
        	            		/Users/xlab/dev/persistence/persistence-sdk/x/lsnative/staking/simulation/sdk_operations.go:567
        	            	github.com/persistenceOne/persistence-sdk/v2/x/lsnative/staking/simulation_test.TestSimulateSdkMsgBeginRedelegate
        	            		/Users/xlab/dev/persistence/persistence-sdk/x/lsnative/staking/simulation/sdk_operations_test.go:283
        	            	unable to resolve type URL /cosmos.staking.v1beta1.MsgBeginRedelegate: tx parse error
        	Test:       	TestSimulateSdkMsgBeginRedelegate

[xlab]

Update: I realized that we also have cosmos.slashing.MsgUnjail from x/slashing, added a router wrapper and corresponding simulation test for that as well.

cd x/lsnative/slashing
go test -v ./...