feat: put if absent & insert or ignore

[vagetablechicken]

• insert or ignore in c++/java
• put if absent for load data
• abort imediately in spark data writer
• appendentries fix: delete or put
• doc
• refactor spark connector config setup

[codecov]

Codecov Report

Attention: 113 lines in your changes are missing coverage. Please review.

Comparison is base (a112872) 78.27% compared to head (2694717) 74.89%.
Report is 8 commits behind head on main.

Files	Patch %	Lines
.../com/_4paradigm/openmldb/spark/OpenmldbConfig.java	0.00%	28 Missing ⚠️
.../com/_4paradigm/openmldb/spark/OpenmldbSource.java	0.00%	12 Missing ⚠️
...openmldb/spark/write/OpenmldbDataSingleWriter.java	0.00%	10 Missing ⚠️
src/sdk/sql_cluster_router.cc	55.00%	9 Missing ⚠️
src/storage/mem_table.cc	43.75%	9 Missing ⚠️
...adigm/openmldb/spark/write/OpenmldbDataWriter.java	0.00%	8 Missing ⚠️
...a/com/_4paradigm/openmldb/spark/OpenmldbTable.java	0.00%	6 Missing ⚠️
src/tablet/tablet_impl.cc	50.00%	6 Missing ⚠️
src/storage/disk_table.cc	42.85%	4 Missing ⚠️
src/storage/segment.cc	90.69%	4 Missing ⚠️
... and 12 more

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #3692      +/-   ##
============================================
- Coverage     78.27%   74.89%   -3.39%     
- Complexity        0      655     +655     
============================================
  Files           553      728     +175     
  Lines        120481   131228   +10747     
  Branches          0     1366    +1366     
============================================
+ Hits          94312    98283    +3971     
- Misses        26153    32646    +6493     
- Partials         16      299     +283     

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