Fix 2276

[ray6080]

This PR makes two changes:

• Move enum classes in common to common/enums.
• Fix 2276 by passing in AccessMode to storage data structures that need to open files. When the access mode is READ_ONLY, we should open the file in a read only mode.

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (627b5f5) 89.67% compared to head (dc598e9) 89.79%.
Report is 6 commits behind head on master.

❗ Current head dc598e9 differs from pull request most recent head 04f08ba. Consider uploading reports for the commit 04f08ba to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2296      +/-   ##
==========================================
+ Coverage   89.67%   89.79%   +0.12%     
==========================================
  Files        1023     1023              
  Lines       35449    35412      -37     
==========================================
+ Hits        31788    31798      +10     
+ Misses       3661     3614      -47     

Files	Coverage Δ
src/binder/bind/bind_copy.cpp	94.73% <ø> (ø)
src/common/expression_type.cpp	87.50% <ø> (ø)
src/common/rel_direction.cpp	66.66% <ø> (ø)
src/common/table_type.cpp	75.00% <ø> (ø)
src/include/binder/bound_comment_on.h	100.00% <ø> (ø)
src/include/binder/bound_explain.h	100.00% <ø> (ø)
src/include/binder/bound_statement.h	100.00% <ø> (ø)
src/include/binder/ddl/bound_alter_info.h	100.00% <ø> (ø)
src/include/binder/expression/expression.h	91.30% <ø> (ø)
src/include/binder/expression/rel_expression.h	100.00% <ø> (ø)
... and 62 more

... and 10 files with indirect coverage changes

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