[Local catalog] Store catalog cellular sync preference

[joshheald]

Part of: WOOMOB-1335

Merge after: #16309

Description

This PR stores a site-specifc setting for syncing the catalog over cellular.

The toggle previously existed, but didn't do anything. It still doesn't do anything... but we remember the setting now!

A following PR will include the use of the setting for our network requests.

Test Steps

1. Open POS for a store which is eligible for local catalog.
2. Go to POS settings > Catalog
3. Observe that the toggle starts out on
4. Turn it off
5. Switch stores and repeat – observe it is on for the new store
6. Go back to the first store – observe it's still off for that store
7. Force quit and reopen the app – observe the settings are still as you left them.

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• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

[dangermattic]

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[wpmobilebot]

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

	App Name	WooCommerce iOS Prototype
	Build Number	pr16314-29fc16b
	Version	23.6
	Bundle ID	com.automattic.alpha.woocommerce
	Commit	29fc16b
	Installation URL	7j2ecdajciot8

Automatticians: You can use our internal self-serve MC tool to give yourself access to those builds if needed.

[iamgabrielma]

It still doesn't do anything... but we remember the setting now!

🎉🎉 🎉 🎉

LGTM 🚢