Add customizable background color for feedback action menu

[SadraKafiri]

📜 Description

feedbackMenuBackgroundColor to allow customizing the background color of the column containing action buttons in the feedback menu.
feedbackMenuForegroundColor to allow customizing the text and icon colors of the action buttons in the feedback menu.

💡 Motivation and Context

Previously, the feedback menu had fixed background and foreground colors for the action buttons column, which limited customization. This change provides flexibility for theming and improves visual consistency and accessibility across apps using the package.

💚 How did you test it?

Tested locally by setting feedbackMenuBackgroundColor and feedbackMenuForegroundColor to different colors.
Verified that the action buttons column background and foreground update correctly without affecting other parts of the menu.

📝 Checklist

• I reviewed submitted code
• I added tests to verify changes
• I updated the docs if needed
• All tests passing
• No breaking changes

🔮 Next steps

• Consider adding more theming options for other parts of the feedback menu.