Enhance ckb export/import subcommand with range and verifier selection

[eval-exec]

What problem does this PR solve?

Issue Number: close #4921

Problem Summary:

This PR significantly enhances the ckb export and ckb import commands with range selection, stdin/stdout support, parallel processing, and improved performance.

What is changed and how it works?

+ rm -rf /tmp/a
+ rm -rf /tmp/export
+ /tmp/ckb init -C /tmp/a
WARN: Mining feature is disabled because of the lack of the block assembler config options.
Initialized CKB directory in /tmp/a
Create ckb.toml
Create ckb-miner.toml
Create default.db-options
Genesis Hash: 0x92b197aa1fba0f63633922c61c92375c9c074a93e85963554f5499fe1450d0e5
+ /tmp/ckb export -C /home/exec/box/ckb_data --target /tmp/export --from 1 --to 200
Writing to /tmp/export/ckb-1-200.jsonl
[00:00:00] ##################################################    201/201    done!
+ ls -ahl /tmp/export
total 1.1M
drwxr-xr-x   2 exec users   60 Jul 22 15:05 .
drwxrwxrwt 109 root root  2.7K Jul 22 15:05 ..
-rw-r--r--   1 exec users 1.1M Jul 22 15:05 ckb-1-200.jsonl
+ /tmp/ckb export -C /home/exec/box/ckb_data --target /tmp/export --from 200 --to 300
Writing to /tmp/export/ckb-200-300.jsonl
[00:00:00] ##################################################    301/301    done!
+ ls -ahl /tmp/export
total 3.3M
drwxr-xr-x   2 exec users   80 Jul 22 15:05 .
drwxrwxrwt 109 root root  2.7K Jul 22 15:05 ..
-rw-r--r--   1 exec users 1.1M Jul 22 15:05 ckb-1-200.jsonl
-rw-r--r--   1 exec users 2.3M Jul 22 15:05 ckb-200-300.jsonl
+ /tmp/ckb import -C /tmp/a /tmp/export/ckb-200-300.jsonl
Before import, current tip is 0-Byte32(0x92b197aa1fba0f63633922c61c92375c9c074a93e85963554f5499fe1450d0e5)
Import error: Custom { kind: Other, error: "In /tmp/export/ckb-200-300.jsonl, the first block is 200-Byte32(0xd7f0a6328a466724a2edabc7ba990bf27a092ec3b555b8d67bd8c9cff0fa6eff), and its parent (hash: Byte32(0x5c75b4fc749d23238a1999296c27359b28043578af84fe0e11f126b75b1d8e53)) was not found in the database. The current tip is 0-Byte32(0x92b197aa1fba0f63633922c61c92375c9c074a93e85963554f5499fe1450d0e5)." }
+ true
+ /tmp/ckb import -C /tmp/a /tmp/export/ckb-1-200.jsonl
Before import, current tip is 0-Byte32(0x92b197aa1fba0f63633922c61c92375c9c074a93e85963554f5499fe1450d0e5)
[00:00:00] ################################################## 1.03MiB/1.03MiB done!
After import, Current tip is 200-Byte32(0xd7f0a6328a466724a2edabc7ba990bf27a092ec3b555b8d67bd8c9cff0fa6eff)
+ /tmp/ckb import -C /tmp/a /tmp/export/ckb-200-300.jsonl
Before import, current tip is 200-Byte32(0xd7f0a6328a466724a2edabc7ba990bf27a092ec3b555b8d67bd8c9cff0fa6eff)
[00:00:01] ################################################## 2.22MiB/2.22MiB done!
After import, Current tip is 300-Byte32(0x2461b3c944f041db2fcf414b0368abae64aa7d72365709bfdd02a41f8ca2a8c2)

Related changes

• Support range feature for ckb export
• Support verifier selection for ckb import
• Export to stdout
• Import from stdin
• Todo Benchmark

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code ci-runs-only: [ quick_checks,linters ]

Side effects

• None

Release note

Note:

  ### Breaking Changes
  ⚠️ **Export format changed from `.json` to `.jsonl`** (JSON Lines format)

  ### New Features

  **Export:**
  - `--from` and `--to` for block range selection (both inclusive)
  - Export to stdout: `ckb export -t -` (enables piping)
  - Parallel processing for better performance

  **Import:**
  - `--num-threads N` to control parallel processing
  - Import from stdin: `ckb import -` (enables piping)
  - `--skip-script-verify` and `--skip-all-verify` flags for faster trusted imports

[driftluo]

serde-rs/json#635 Need to limit the number of parallel serde json, its memory usage is very large

[eval-exec]

Memory usage is bounded by num_threads (defaults to CPU cores).

CKB max block size is 0.6M, on a 128-core systems, I think worst case is about 0.6MB * 10x serde overhead * 128 cores = 770MB is acceptable. Users can lower --num-threads if needed.

[doitian]

It's not clear whether to is inclusive or exclusive.

[eval-exec]

Updated:

        .arg(
            Arg::new(ARG_FROM)
                .long(ARG_FROM)
                .value_name("from")
                .required(false)
                .help("Specify the starting block number/hash for export (inclusive)"),
        )
        .arg(
            Arg::new(ARG_TO)
                .long(ARG_TO)
                .value_name("to")
                .required(false)
                .help("Specify the ending block number/hash for export (inclusive)"),