feat: support alter table

[tobegit3hub]

• Support add symbolic path.
• Support drop symbolic path.

These are the simple cases to test.

create database if not exists db;

create table if not exists db.t1 (name string);

alter table db.t1 add offline_path 'hdfs://foo/bar';

alter table db.t1 drop offline_path 'hdfs://foo/bar';

alter table db.t1 add offline_path 'hdfs://foo/bar';

alter table db.t1 drop offline_path 'hdfs://foo/bar', add offline_path 'hdfs://foo/bar2';

desc db.t1;

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +0.13 🎉

Comparison is base (eb14873) 75.50% compared to head (21d87a6) 75.64%.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #3323      +/-   ##
============================================
+ Coverage     75.50%   75.64%   +0.13%     
  Complexity      414      414              
============================================
  Files           693      692       -1     
  Lines        126088   125870     -218     
  Branches       1189     1189              
============================================
+ Hits          95206    95212       +6     
+ Misses        30641    30417     -224     
  Partials        241      241              

Impacted Files	Coverage Δ
src/sdk/sql_cluster_router.cc	61.29% <0.00%> (-1.13%)	⬇️

... and 14 files with indirect coverage changes

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