Modify cometbft-rs to support the new cometbft protobufs while keeping compatibility with legacy protobufs.
The legacy releases are supported by v1beta* packages generated from versioned CometBFT protobufs.

• Clone tendermint-rs into cometbft-rs
• Rebrand as CometBFT cometbft-rs#5
• Add autogenerated protos for v1.0 cometbft-rs#2
• Adapt domain types to support v1.0 protos cometbft-rs#9
• Add v1.x support to CompatMode in rpc to use version-prefixed request path rpc: Support for CometBFT 1.0 in CompatMode cometbft-rs#12