[Backend Receipts] Update store and actions to account for backend receipts

[iamgabrielma]

Closes #11828
#11847 must be merged first.

Description

This PR updates the business logic in order to fetch a receipt from the new API endpoint when the proper action is invoked.

We also update the UI to display a temporary [Debug] See Backend Receipt button for all orders for developer builds. The existing See Receipt will be displayed as always, this means that if the local-generated receipt exists on the device, then its row will also be shown below (we don't change the legacy logic for locally-generated receipts).

This is only for testing purposes and to keep changes small, in following PRs we'll add further validation (feature flag + Woo version) and display only the local receipt or the backend receipt, but not both.

If local receipt doesn't exist	If local receipt does exist

Changes

• Added a new ReceiptAction which will either return a Receipt or an Error from the remote.
• Added an additional seeReceipt row to the tableview datasource, this is feature flagged so will only be shown in dev builds.
• When the button is tapped, we will reach the new endpoint and return either a Receipt or an Error. At the moment we just log the result to the console.
• Updated unit tests

Testing instructions

Success:

• In the app, log into mywootestingstore.mystagingwebsite.com (you will find the credentials in your email). This is necessary since the site runs a developer branch of WooCommerce needed to use the new receipts endpoint.
• Go to Orders > tap on any order (at the moment doesn't matter it's status) > tap on [Debug] See Backend Receipt
• Observe that Xcode console logs the receipt:

"Receipt(receiptURL: \"https://mywootestingstore.mystagingwebsite.com/wc/file/transient/7e811fa568e1102fe3bec19f0a2441cf116bf4\", expirationDate: \"2024-01-31\")"

Failure:

• In the app, log into any other site that runs a production version of WooCommerce
• Go to Orders > tap on any order > tap on [Debug] See Backend Receipt
• Observe that Xcode console logs the error:

"Dotcom Invalid REST Route"

Screenshots

[wpmobilebot]

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

	App Name	WooCommerce iOS
	Build Number	pr11848-d4bb8ce
	Version	17.1
	Bundle ID	com.automattic.alpha.woocommerce
	Commit	d4bb8ce
	App Center Build	WooCommerce - Prototype Builds #7843

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

[iamgabrielma]

As always, only one reviewer is needed 🙇

[iamgabrielma]

@bozidarsevo if you keep having troubles to log into the testing site, an alternative is to create a new site that uses the WooCommerce development branch for the API:

1. Create a fresh jurassic-ninja, Pressable (you can log with your a8c email for the free sites), or other non-managed self-hosted site. The WooCommerce install cannot be managed, otherwise the version used is set by the hosting.
2. From the dev branch (Add the Receipts Rendering Engine woocommerce#43502), open the latest build and download the artifact (you might need to re-run the job if has expired: pdfdoF-4gx-p2#comment-5732 )
3. Unzip it, install it in your site as a normal plugin, configure some payment methods (COD or bank transfer is enough), add a product, and create an order.

*version might be different, but you'll see something similar in wp-admin