Add top K optimizer

[andyfengHKU]

No description provided.

[codecov]

Codecov Report

Patch coverage: 88.88% and no project coverage change.

Comparison is base (f6154ec) 89.87% compared to head (beb15e6) 89.87%.
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1949   +/-   ##
=======================================
  Coverage   89.87%   89.87%           
=======================================
  Files         873      873           
  Lines       32062    32066    +4     
=======================================
+ Hits        28815    28819    +4     
  Misses       3247     3247           

Files Changed	Coverage Δ
src/optimizer/optimizer.cpp	100.00% <ø> (ø)
src/planner/plan/plan_projection.cpp	100.00% <ø> (ø)
src/storage/local_table.cpp	89.90% <ø> (ø)
src/planner/operator/logical_order_by.cpp	91.30% <71.42%> (-8.70%)	⬇️
...rc/include/planner/logical_plan/logical_order_by.h	100.00% <100.00%> (ø)
src/optimizer/projection_push_down_optimizer.cpp	98.79% <100.00%> (+<0.01%)	⬆️
src/planner/operator/logical_limit.cpp	100.00% <100.00%> (ø)
src/processor/map/map_order_by.cpp	100.00% <100.00%> (ø)

... and 2 files with indirect coverage changes

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[acquamarin]

remove