[Woo POS] Add setting option to enable/disable Cha-Ching sound in POS

[AnirudhBhat]

Closes: #13804

NOTE: This PR depends on another parent PR. Please merge only after the parent PR has been merged.

Description

This PR gives merchants an ability to enable/disable the Cha-Ching sound on successful payment. The option is preserved in shared preference and hence it is remembered until the user signs out or uninstalls the app.

NOTE: Please note that the design and the placement of the setting is not optimal and needs design consideration before merging the code. I worked on this as a part of HACK week to demonstrate the feature. This can be merged only after we finalise the placement of the setting and designs.

Steps to reproduce

1. Navigate to POS mode (more menu -> POS)
2. Ensure you see an option to enable/disable Cha-Ching sound from the popup menu
3. Enable the setting and make sure you hear Cha-Ching sound on successful payment
4. Disable the setting and make sure you do not hear Cha-Ching sound on successful payment

The tests that have been performed

Tested above steps on both emulator and on tablet device

Images/gif

cha_ching_sound.mp4

• I have considered if this change warrants release notes and have added them to RELEASE-NOTES.txt if necessary. Use the "[Internal]" label for non-user-facing changes.

Reviewer (or Author, in the case of optional code reviews):

Please make sure these conditions are met before approving the PR, or request changes if the PR needs improvement:

• The PR is small and has a clear, single focus, or a valid explanation is provided in the description. If needed, please request to split it into smaller PRs.
• Ensure Adequate Unit Test Coverage: The changes are reasonably covered by unit tests or an explanation is provided in the PR description.
• Manual Testing: The author listed all the tests they ran, including smoke tests when needed (e.g., for refactorings). The reviewer confirmed that the PR works as expected on big (tablet) and small (phone) in case of UI changes, and no regressions are added.

[dangermattic]

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[wpmobilebot]

📲 You can test the changes from this Pull Request in WooCommerce-Wear Android by scanning the QR code below to install the corresponding build.

	App Name	WooCommerce-Wear Android
	Platform	⌚️ Wear OS
	Flavor	Jalapeno
	Build Type	Debug
	Commit	f4aef71
	Direct Download	woocommerce-wear-prototype-build-pr13809-f4aef71.apk

[wpmobilebot]

📲 You can test the changes from this Pull Request in WooCommerce Android by scanning the QR code below to install the corresponding build.

	App Name	WooCommerce Android
	Platform	📱 Mobile
	Flavor	Jalapeno
	Build Type	Debug
	Commit	f4aef71
	Direct Download	woocommerce-prototype-build-pr13809-f4aef71.apk