feat: new data export tool

[xiaopanz]

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...) this PR intends to introduce an independent data export tool.

• What is the current behavior? (You can also link to an open issue here) Openmlbd lacks a data export tool right now.

• What is the new behavior (if this is a feature change)? The data exporter can export online tables in both modes.

[codecov[bot]]

Codecov Report

Base: 75.57% // Head: 75.61% // Increases project coverage by +0.03% :tada:

Coverage data is based on head (4cfad0c) compared to base (af0272c). Patch has no changes to coverable lines.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2035      +/-   ##
============================================
+ Coverage     75.57%   75.61%   +0.03%     
- Complexity      347      386      +39     
============================================
  Files           609      644      +35     
  Lines        116409   121235    +4826     
  Branches       1015     1056      +41     
============================================
+ Hits          87974    91669    +3695     
- Misses        28226    29331    +1105     
- Partials        209      235      +26     

Impacted Files	Coverage Δ
src/sdk/sql_cluster_router.h	0.00% <0.00%> (-83.34%)	:arrow_down:
...4paradigm/openmldb/batch/utils/UnsafeRowUtil.scala	44.73% <0.00%> (-39.48%)	:arrow_down:
hybridse/src/codec/row.cc	47.69% <0.00%> (-12.01%)	:arrow_down:
src/sdk/result_set_sql.h	47.95% <0.00%> (-10.27%)	:arrow_down:
.../com/_4paradigm/openmldb/batch/SparkRowCodec.scala	56.89% <0.00%> (-9.97%)	:arrow_down:
...aradigm/openmldb/batch/window/WindowComputer.scala	75.92% <0.00%> (-5.63%)	:arrow_down:
...in/java/com/_4paradigm/openmldb/sdk/SdkOption.java	83.72% <0.00%> (-5.17%)	:arrow_down:
hybridse/src/udf/literal_traits.h	93.82% <0.00%> (-4.88%)	:arrow_down:
src/catalog/sdk_catalog.cc	69.44% <0.00%> (-4.56%)	:arrow_down:
include/base/type.h	85.48% <0.00%> (-4.35%)	:arrow_down:
... and 202 more

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[github-actions[bot]]

SDK Test Report

  83 files    83 suites   1m 35s :stopwatch: 171 tests 165 :heavy_check_mark: 6 :zzz: 0 :x: 216 runs  210 :heavy_check_mark: 6 :zzz: 0 :x:

Results for commit 4cfad0c8.

:recycle: This comment has been updated with latest results.

[github-actions[bot]]

Linux Test Report

565 tests   558 :heavy_check_mark:  26m 4s :stopwatch:   57 suites      7 :zzz:   51 files        0 :x:

Results for commit 4cfad0c8.

:recycle: This comment has been updated with latest results.

[dl239]

ospp - the data export tool

[lumianph]

is it integrated with openmldb-tool?