iOS SDK Upgrade to 2.1.2

[andrekovac]

iOS SDK Changelog: https://github.com/helpscout/beacon-ios-sdk/blob/master/CHANGELOG.md

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@JonasWho reported: iOS project build error after updating the pod version of 'Beacon'

Originally posted by @andrekovac in #4 (comment)

[andrekovac]

from iOS SDK this line might be useful:

SwiftUI previews now work as we distribute Beacon 2.1.0 as an XCFramework. Issue 112

See this comment as well: https://github.com/helpscout/beacon-ios-sdk/issues/112#issuecomment-724197861

[andrekovac]

Notes after attempting the upgrade, but running into the error stated in the issue description:

Error

Right above the error in the screenshot of the issue description ( the one which starts with CompileC ....) it says:

/.../node_modules/react-native-helpscout-beacon/ios/HelpscoutBeacon.m:2:9: fatal error: 'Beacon.h' file not found
#import "Beacon.h"
        ^~~~~~~~~~
1 error generated.

Unsuccessful attempts

• Adjusting the react-native-helpscout-beacon.podspec of this repo (adding fields s.frameworks or s.vendored_frameworks) didn't work so far.
• Add the xcframework manually and set s.vendored_frameworks and s.exclude_files as done here: https://github.com/Driversnote-Dev/react-native-kontaktio/blob/master/KontaktBeacons.podspec
  This probably doesn't work because .xcframework and .framework files likely have to be treated differently.

use_frameworks! in Podfile of target project

The HelpScout Beacon iOS SDK Cocoapods instructions state that use_frameworks! (which declares that you want to use dynamic frameworks, instead of static libraries) has to be added to the Podfile. This however conflicts with use_native_modules! which is added for auto-linking react-native packages.

As a solution to this problem this SO answer can be used. This however didn't solve the overall issue.

[andrekovac]

Please continue work on this issue by adding to PR #7