AINFRA-780 - Make HardwareTests a Swift package test target

[mokagio]

Description

Now that all the frameworks sources are Swift packages (targets in the same Swift package to be precise) we can move the tests there, too. We didn't do that all in one go to avoid big diffs.

Notice:

• The whole Hardware/ folder has been removed, including the dedicated Xcode project
• No changes in the test code

Testing information

See green CI.

Additionally, you can run the focused Hardware tests by selecting the Hardware scheme from Xcode.

Screenshots

---

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

[dangermattic]

	2 Warnings
⚠️	Modules/Package.swift was changed without updating its corresponding Package.resolved. Please resolve the Swift packages as appropriate to your project setup (e.g. in Xcode or by running swift package resolve).
⚠️	This PR is larger than 300 lines of changes. Please consider splitting it into smaller PRs for easier and faster reviews.

Generated by 🚫 Danger

[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	30638
	Version	PR #15789
	Bundle ID	com.automattic.alpha.woocommerce
	Commit	1ba1d09
	Installation URL	2phllgsqtpni0

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