fix: format Hudi config enum should show the full config key

[Kunal-Singh-Dadhwal]

Description

1. Implemented display trait for the HudiTableConfig
2. Added Test

Closes #253

How are the changes test-covered

• N/A
• Automated tests (unit and/or integration tests)
• Manual tests
  • Details are described below

[codecov]

Codecov Report

Attention: Patch coverage is 33.33333% with 4 lines in your changes missing coverage. Please review.

Project coverage is 91.13%. Comparing base (af997b7) to head (ebc9b84).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/core/src/config/internal.rs	0.00%	2 Missing ⚠️
crates/core/src/config/read.rs	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #254      +/-   ##
==========================================
- Coverage   91.31%   91.13%   -0.18%     
==========================================
  Files          40       40              
  Lines        1946     1952       +6     
==========================================
+ Hits         1777     1779       +2     
- Misses        169      173       +4     

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

[xushiyan]

@Kunal-Singh-Dadhwal thanks for the PR!