Add contributor arnavsharma990 with interactive Tic-Tac-Toe component

[arnavsharma990]

• Added a new contributor file: arnavsharma990.scala
• Implemented an interactive Tic-Tac-Toe mini game using Calico and Cats Effect
• Registered my handle in all.scala
• Verified that the contributor order passes using the Check order button

[Copilot]

Pull request overview

Adds a new contributor component for arnavsharma990, featuring an interactive Tic-Tac-Toe mini-game built with Calico + Cats Effect, and registers the contributor in the global contributor list.

Changes:

• Added arnavsharma990 contributor component implementing an interactive Tic-Tac-Toe game using SignallingRef state.
• Registered arnavsharma990 in allContributors list.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/main/scala/gsoc/contributors/arnavsharma990.scala	New contributor UI component with Tic-Tac-Toe game and required policy agreement statement.
src/main/scala/gsoc/contributors/all.scala	Adds arnavsharma990 to the allContributors registry list.

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[Copilot]

TicTacToe is introduced as a public top-level object in the gsoc.contributors package, which unnecessarily expands the package namespace and increases the risk of name collisions with other contributor files. Consider moving the game model/helpers inside the arnavsharma990 contributor block (like other contributors do), or make the helper object explicitly private and uniquely named (e.g., private object ArnavTicTacToe) to keep helper code scoped to this component. (See examples of top-level helpers being private object ... in antoniojimeneznieto.scala:73, tanmay_008.scala:78, yummy_yums.scala:100.)

Suggested change

	object TicTacToe:
	private object TicTacToe:

[armanbilge]

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You used Copilot to generate a description of your PR, in violation of our policy.

Therefore, I will close your PR at this time.