fix: Change InCommitTimestamp enablement getter function

[DrakeLin]

What changes are proposed in this pull request?

#1356

The in_commit_timestamp_enablement() method returns errors when ICT is enabled but enablement properties are missing, violating the Delta protocol. When table is created with ICT enablement info, the enablement properties will stay empty.

This change introduces a new enum to capture ICT enablement.

How was this change tested?

New and edited unit tests

[codecov]

Codecov Report

❌ Patch coverage is 96.29630% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 84.81%. Comparing base (af78ccb) to head (989a871).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
kernel/src/table_configuration.rs	96.29%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1357      +/-   ##
==========================================
+ Coverage   84.79%   84.81%   +0.01%     
==========================================
  Files         113      113              
  Lines       28613    28647      +34     
  Branches    28613    28647      +34     
==========================================
+ Hits        24263    24297      +34     
  Misses       3196     3196              
  Partials     1154     1154              

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[OussamaSaoudi]

Just wanna add that one clarifying comment :)

[zachschuermann]

LGTM awesome