[EPIC] Upgrade Rollkit to Cosmos SDK 0.47.x compatibility

[gupadhyaya]

Phase 1: Cosmos SDK 0.47.x w/ cometbft 0.37.x (for Sugra)

• Sync rollkit/cometbft (branch: rollkit/v0.37.1) to cometbft:v0.37.1
• Pull cosmos/cosmos-sdk:release/v0.47.x to rollkit/cosmos-sdk (https://github.com/rollkit/cosmos-sdk/commits/release/v0.47.x-rollkit)
• Replace tendermint with cometbft (Replace tendermint with cometbft #793)
• Upgrade rollkit mempool from old tendermint copy to cometbft (Adapting mempool for cometbft release #991)
• Draft rollkit release (0.10.x) using diego/cometbft-0.37.1-mempool branch to test the cosmos-sdk:release/v0.47.x
• Add rollkit changes to cosmos-sdk:release/v0.47.x with draft release and also use rollkit/cometbft (branch: rollkit/v0.37.1)
• Test gm tutorial

Phase 2: Cosmos SDK 0.47.x w/ cometbft 0.38.x (for Siralop)

• Upgrade rollkit mempool to bring the latest breaking changes from cometbft 0.38.x
• Update rollkit to use rollkit/cometbft (branch: rollkit/v0.38.0-alpha.2)
• Draft rollkit release (0.10.x) to test the cosmos-sdk:release/v0.47.x with cometbft 0.38.x
• Add rollkit changes to cosmos-sdk:release/v0.47.x with draft release and also use rollkit/cometbft (branch: rollkit/v0.38.0-alpha.2)
• Test gm tutorial

[MSevey]

Key things to note from the plan.

Rollkit v0.9.x will be cometbft v0.37.x and cosmos-sdk v0.47.x

Rollkit v0.10.x will be cometbft v0.38.x and cosmos-sdk v0.47.x

Part of releasing v0.9.x should be stating what, if any, updates we plan to make to that release. I would recommend we start from an expectation that we won't be applying any updates to v0.9.x, we are simply establishing a stable release for those needing cosmos-sdk v0.47.x and cometbft v0.37.x. If there are bugs or updates needed, the expectation should be that people are upgrading to rollkit v0.10.x or higher.

[Manav-Aggarwal]

Can we mark this as closed? @gupadhyaya

[gupadhyaya]

i think we can close this epic after the custom GM tutorial (should be done this week).