Append FTableScan before RecursiveJoin

[andyfengHKU]

This PR adds a FTableScan before RecursiveJoin. Previously the same logic is written in RecrusiveJoin.

This Pr also solves issue #1347

[codecov]

Codecov Report

Patch coverage: 98.09% and project coverage change: -0.01 ⚠️

Comparison is base (976d035) 91.45% compared to head (526176f) 91.44%.

❗ Current head 526176f differs from pull request most recent head 0ffde6f. Consider uploading reports for the commit 0ffde6f to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1658      +/-   ##
==========================================
- Coverage   91.45%   91.44%   -0.01%     
==========================================
  Files         726      727       +1     
  Lines       26411    26388      -23     
==========================================
- Hits        24153    24131      -22     
+ Misses       2258     2257       -1     

Impacted Files	Coverage Δ
src/processor/mapper/map_extend.cpp	96.96% <ø> (+0.85%)	⬆️
.../processor/operator/table_scan/base_table_scan.cpp	100.00% <ø> (ø)
src/processor/mapper/map_recursive_extend.cpp	94.87% <94.87%> (ø)
src/include/processor/operator/cross_product.h	100.00% <100.00%> (ø)
...ocessor/operator/recursive_extend/recursive_join.h	100.00% <100.00%> (ø)
src/include/processor/operator/result_collector.h	100.00% <100.00%> (ø)
...de/processor/operator/table_scan/base_table_scan.h	100.00% <100.00%> (ø)
...cessor/operator/table_scan/factorized_table_scan.h	78.57% <100.00%> (-1.43%)	⬇️
...ude/processor/operator/table_scan/union_all_scan.h	100.00% <100.00%> (ø)
src/include/processor/result/factorized_table.h	96.82% <100.00%> (+0.05%)	⬆️
... and 8 more

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