Fix rel updates

[ray6080]

Fix SET on rel tables. Also introduce the rel local storage. This is gonna break our test coverage as code path for insert/delete in local storage are not covered yet, which will be covered in the following PR.

[codecov]

Codecov Report

Attention: 86 lines in your changes are missing coverage. Please review.

Comparison is base (bb159fe) 90.44% compared to head (fb0bfcf) 90.70%.

Files	Patch %	Lines
src/storage/local_storage/local_rel_table.cpp	40.00%	69 Missing ⚠️
...rc/include/storage/local_storage/local_rel_table.h	76.47%	4 Missing ⚠️
src/storage/local_storage/local_node_table.cpp	96.84%	3 Missing ⚠️
src/storage/store/column.cpp	82.35%	3 Missing ⚠️
...c/include/storage/local_storage/local_node_table.h	81.81%	2 Missing ⚠️
src/processor/operator/persistent/merge.cpp	0.00%	2 Missing ⚠️
src/include/storage/local_storage/local_table.h	87.50%	1 Missing ⚠️
src/include/storage/store/string_column.h	0.00%	1 Missing ⚠️
src/storage/local_storage/local_table.cpp	96.42%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2425      +/-   ##
==========================================
+ Coverage   90.44%   90.70%   +0.26%     
==========================================
  Files        1020     1024       +4     
  Lines       36641    36868     +227     
==========================================
+ Hits        33139    33441     +302     
+ Misses       3502     3427      -75     

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