feat: #1448 add missing ChoiceChip properties

[ahmedmandur]

Added all missing properties from Flutter's ChoiceChip widget to FormBuilderChoiceChip to enhance customization options and match Flutter's native widget capabilities.

Connection with issue(s)

Connected to #1448

Solution description

Added the following properties from Flutter's ChoiceChip widget to FormBuilderChoiceChip:

Core properties:

• surfaceTintColor: For Material 3 surface tint color support
• clipBehavior: For controlling how the chip clips its content
• checkmarkColor: For customizing the checkmark color when selected
• autofocus: Control initial focus state
• avatarBoxConstraints: Control avatar size and constraints
• chipAnimationStyle: Customize selection animation style
• color: State-based color customization
• iconTheme: Icon styling customization
• tooltip: Long-press tooltip support

All properties were added with their original documentation and default values to maintain consistency with Flutter's implementation.

Screenshots or Videos

N/A - The changes are property additions that enhance customization options without visual changes to the default appearance.

To Do

• Read contributing guide
• Check the original issue to confirm it is fully satisfied
• Add solution description to help guide reviewers
• Add documentation to code properties and package readme
• Add unit test to verify new or fixed behaviour

[deandreamatias]

Hi, thanks for contribution!
If you can add this properties too, I will apreciated

[ahmedmandur]

i made the changes and added the mentioned properties.
i also made some README.md format for better readability without changing the content.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.11%. Comparing base (08ccbc9) to head (7e229f8).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1449   +/-   ##
=======================================
  Coverage   88.11%   88.11%           
=======================================
  Files          21       21           
  Lines         774      774           
=======================================
  Hits          682      682           
  Misses         92       92           

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