feat: add exp/database/sql/ddl/postgres package

[ginokent]

Ticket / Issue Number

Note
Please fill in the ticket or issue number.

Example:

#3

What's changed

Note
Please explain what changes this pull request will make.

Example:

• Added functionality to perform 'bar' on 'foo'.

Check List

• Assign labels
• Add appropriate test cases

Remark

Note
Please provide additional remarks if necessary.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (10a0933) 100.00% compared to head (770330e) 100.00%.

❗ Current head 770330e differs from pull request most recent head 119a043. Consider uploading reports for the commit 119a043 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##              main      #145     +/-   ##
===========================================
  Coverage   100.00%   100.00%             
===========================================
  Files           78       101     +23     
  Lines         3802      6970   +3168     
===========================================
+ Hits          3802      6970   +3168     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.