feat(tui): initialize TUI with Ratatui

[orhun]

Important

I'm building this on livestream: https://www.youtube.com/@orhundev

Description

Heavily WIP

Motivation and Context

Why not?

How Has This Been Tested?

Screenshots / Logs (if applicable)

Types of Changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation (no code change)
• Refactor (refactoring production code)
• Other

Checklist:

• My code follows the code style of this project.
• I have updated the documentation accordingly.
• I have formatted the code with rustfmt.
• I checked the lints with clippy.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 1.37931% with 286 lines in your changes missing coverage. Please review.

Project coverage is 37.45%. Comparing base (e85888f) to head (367d45a).

Files with missing lines	Patch %	Lines
git-cliff-tui/src/ui.rs	0.00%	86 Missing ⚠️
git-cliff-tui/src/effect.rs	0.00%	55 Missing ⚠️
git-cliff-tui/src/state.rs	0.00%	30 Missing ⚠️
git-cliff-tui/src/logo.rs	0.00%	28 Missing ⚠️
git-cliff/src/lib.rs	0.00%	23 Missing ⚠️
git-cliff-tui/src/main.rs	0.00%	22 Missing ⚠️
git-cliff-tui/src/event.rs	0.00%	20 Missing ⚠️
git-cliff/src/main.rs	0.00%	19 Missing ⚠️
git-cliff-core/src/changelog.rs	80.00%	1 Missing ⚠️
git-cliff/src/bin/completions.rs	0.00%	1 Missing ⚠️
... and 1 more

❗ There is a different number of reports uploaded between BASE (e85888f) and HEAD (367d45a). Click for more details.

HEAD has 2 uploads less than BASE

Flag	BASE (e85888f)	HEAD (367d45a)
unit-tests	3	1

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #884      +/-   ##
==========================================
- Coverage   42.85%   37.45%   -5.39%     
==========================================
  Files          21       27       +6     
  Lines        1734     1992     +258     
==========================================
+ Hits          743      746       +3     
- Misses        991     1246     +255     

Flag	Coverage Δ
unit-tests	37.45% <1.38%> (-5.39%)	⬇️

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