Add support for round room paint calculations

[durimkryeziu]

Refactored RoomDimensions from a concrete record to a sealed interface to support multiple room shapes. Created RectangularRoom and RoundRoom implementations, with RoundRoom calculating area as πr². Added shape selection menu to PaintCalculator to prompt for room type before collecting dimensions.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 57786c79-5efa-4dd4-b8a4-eca5fabbed66

📥 Commits

Reviewing files that changed from the base of the PR and between 2a8a182 and 5a09894.

📒 Files selected for processing (8)

• paint-calculator/src/main/java/dev/delivercraft/paint/PaintCalculator.java
• paint-calculator/src/main/java/dev/delivercraft/paint/RectangularRoom.java
• paint-calculator/src/main/java/dev/delivercraft/paint/RoomDimensions.java
• paint-calculator/src/main/java/dev/delivercraft/paint/RoundRoom.java
• paint-calculator/src/test/java/dev/delivercraft/paint/MainTest.java
• paint-calculator/src/test/java/dev/delivercraft/paint/PaintCalculatorTest.java
• paint-calculator/src/test/java/dev/delivercraft/paint/PaintEstimatorTest.java
• paint-calculator/src/test/java/dev/delivercraft/paint/RoundRoomTest.java

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch paint-calculator-round-room

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.33%. Comparing base (2a8a182) to head (5a09894).
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Additional details and impacted files

@@             Coverage Diff              @@
##               main      #23      +/-   ##
============================================
+ Coverage     77.41%   78.33%   +0.91%     
- Complexity      116      123       +7     
============================================
  Files            33       34       +1     
  Lines           403      420      +17     
  Branches         24       25       +1     
============================================
+ Hits            312      329      +17     
  Misses           84       84              
  Partials          7        7              

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