fix(device_info_plus): Add iOS Privacy Info

[miquelbeltran]

Description

• Add PrivacyInfo to podspec of Device Info Plus

Related Issues

• Part of iOS privacy manifest required for several plugins #2447

Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• I titled the PR using Conventional Commits.
• I did not modify the CHANGELOG.md nor the plugin version in pubspec.yaml files.
• All existing and new tests are passing.
• The analyzer (flutter analyze) does not report any problems on my PR.

Breaking Change

Does your PR require plugin users to manually update their apps to accommodate your change?

• Yes, this is a breaking change (please indicate that with a ! in the title as explained in Conventional Commits).
• No, this is not a breaking change.

[victor-kotov]

Hi, @miquelbeltran could you please provide your thoughts re: if the empty PrivacyInfo.xcprivacy actually follow the Apple's guideline for API declaration? As far as I understand developers should provide NSPrivacyAccessedAPIType with NSPrivacyAccessedAPITypeReasons, not just empty plist 🤔 This question is general one as it looks like common "PR fix" across the Flutter packages and I'm just going by the list of these provided by Apple here https://developer.apple.com/support/third-party-SDK-requirements/ and device_info_plus at the top of my packages subset

[victor-kotov]

Eg from WWDC video https://developer.apple.com/wwdc23/10060?time=578

[miquelbeltran]

As explained here, I couldn't find the use of any "Required API" by the plugin: #2447 (comment) that's why the privacy manifest NSPrivacyAccessedAPIType array is empty.

I am currently not developing iOS apps, so I have no way to verify this. If you are still facing issues, please fork the project, do the appropriated changes and report back, I'll be very interested to know!