feat: Implement RegionScanner for SeqScan (#4060)

* feat: ordered builder wip

* feat: impl RegionScanner for SeqScan

* feat: implement scan_partition and build_stream

* chore: return SeqScan as RegionScanner

* fix: group parts

* feat: split parts

* chore: reader metrics

* chore: metrics

* chore: remove unused codes

* chore: support holding a group of ranges in ScanPart

* feat: group ScanParts to ScanParts

* feat: impl SeqScanner again

* chore: observe build cost in ScannerMetrics

* chore: fix compiler warnings

* style: fix clippy

* docs: update config docs

* chore: forward DisplayAs to scanner

* test: update sqlness tests

* chore: update debug fmt

* chore: custom debug for timestamp

fix test compiling issue with common-macro when running
cargo nextest -p common-time

* chore: update debug format

* feat: update fmt for scan part

* chore: fix warning

* fix: sanitize parallelism

* feat: split parts

* test: fix config api test

* feat: update logs

* chore: Revert "chore: remove unused codes"

This reverts commit b548b30a01eeded59b1a0a8d89f9293ca63afc41.

* chore: Revert "docs: update config docs"

This reverts commit a7997e78d6ddcf635560574de8c1948c495bdd12.

* feat: each partition scan files in parallel

* test: fix config api test

* docs: fix typo

* chore: address comments, simplify tests

* feat: global semaphore

* feat: always spawn task

* chore: simplify default explain output format

* handle output partiton number is 0

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>

* fix typo

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>

---------

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>
Co-authored-by: Ruihang Xia <waynestxia@gmail.com>

tests-integration/src/grpc.rs

@@ -652,7 +652,7 @@ CREATE TABLE {table_name} (
 
         let request = Request::Query(QueryRequest {
             query: Some(Query::Sql(
-                "SELECT ts, a, b FROM auto_created_table".to_string(),
+                "SELECT ts, a, b FROM auto_created_table order by ts".to_string(),
             )),
         });
         let output = query(instance, request.clone()).await;