Add support to copy from multiple parquet files

[acquamarin]

1. Add support to copy from multiple parquet files.
2. Remove support to load arrow files.

[andyfengHKU]

I have a separate question. When using glob, can we try to ensure glob("a*.csv") will be expanded in alphabetical order, i.e. a0.csv, a1.csv ...

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.23 🎉

Comparison is base (0fb8cd9) 92.52% compared to head (d81da19) 92.76%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1377      +/-   ##
==========================================
+ Coverage   92.52%   92.76%   +0.23%     
==========================================
  Files         641      641              
  Lines       22134    22077      -57     
==========================================
  Hits        20480    20480              
+ Misses       1654     1597      -57     

Impacted Files	Coverage Δ
src/binder/bind/bind_copy.cpp	87.50% <ø> (-0.44%)	⬇️
src/common/copier_config/copier_config.cpp	100.00% <ø> (ø)
src/include/common/copier_config/copier_config.h	100.00% <ø> (ø)
src/include/storage/copy_arrow/copy_node_arrow.h	100.00% <ø> (ø)
src/include/storage/copy_arrow/copy_rel_arrow.h	100.00% <ø> (ø)
...include/storage/copy_arrow/copy_structures_arrow.h	100.00% <ø> (ø)
src/common/file_utils.cpp	71.83% <100.00%> (+0.40%)	⬆️
src/storage/copy_arrow/copy_node_arrow.cpp	95.03% <100.00%> (+11.05%)	⬆️
src/storage/copy_arrow/copy_rel_arrow.cpp	95.61% <100.00%> (+3.80%)	⬆️
src/storage/copy_arrow/copy_structures_arrow.cpp	82.05% <100.00%> (+5.95%)	⬆️

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