Change the consensus to CometBFT

[zemyblue]

Summary

Let's change the consensus to CometBFT for compatibility with Cosmos-sdk's infra.

Problem Definition

The current finschia-sdk has a different interface and structure from cosmos-sdk, so a lot of time and resources must be invested to apply the good features of the latest cosmos-sdk. However, since the actual efficiency gained compared to this investment is not that great, I think it is a better way to maintain compatibility in the future by directly proposing and contributing the necessary functions to cosmos-sdk.

Therefore, we propose applying Ostracon's main features and useful improvements to cometBFT as in Finschia/cometbft#1, and changing the consensus from Ostracon to cometbft in order to use cometbft in finschia-sdk.

Proposal

Change the consensus from Ostracon to CometBFT.

Pros

• We can maintain compatibility with cosmos-sdk.
• It becomes easier to apply the latest cosmos-sdk.

Cons

• Ostracon’s performance and specialized functions cannot be used.

Todo

• change the base consensus from ostracon to tendermint (v0.34.24)
• change the base consensus from tendermint to cometbft (v0.34.27)

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[zemyblue]

If this issue is completed, #674 will be fixed.

[zemyblue]

We need to check lbm.base.ostracon.v1.Query.GetBlockResultsByHeight and lbm.base.ostracon.v1.Query.GetBlockByHash of #291 are removed.

This apis are provided in REST api in cosmos-sdk's cometbft api. I think we need to check it later.
https://github.com/cosmos/cosmos-sdk/blob/f6df368d8d45573b99067f0ba87b6d3a5c53128c/client/cometbft.go#L19