[Block] Generate block and provide block-related RPC

[baichuan3]

Proposal Details

1. Processing block generation logic
2. Providing an RPC API for querying the latest block height
3. Providing an RPC API for querying block Meta information, querying by height
4. Providing an RPC API for batch acquisition of block info, pagination by height

[popcnt1]

#2960

[popcnt1]

Is it possible to finalize the required data structures?Submit a PR for the interface to be implemented, and then I'll see if it needs to be tweaked on the SCC side or if it can be implemented directly. @baichuan3

[baichuan3]

The block field is required for finality, and other fields do not need to be processed by finality. @popcnt1

#[derive(Debug, Serialize, Deserialize)]
pub struct Block {
    #[serde(rename = "block_hash")]
    pub block_hash: String,
    #[serde(rename = "block_height")]
    pub block_height: u64,
    #[serde(rename = "block_timestamp")]
    pub block_timestamp: u64,
}