For backward compat, build-tools package isn't added to FloatingPanel
project file as a local package. Because it breaks builds on Xcode 14.2
or earlier according to the swift version.
I confirmed this behavior was improved on Xcode 15 beta.
But so far we need to add the build-tools package into the project
file manually as a local package to work the build tool plugin.
This fixed the following error occurs and crashes when running an app built with xcode14 on iOS11.
```
dyld: Library not loaded: /usr/lib/swift/libswiftCoreGraphics.dylib
Referenced from: /private/var/containers/Bundle/Application/0B28F8D6-D8CE-400B-98B7-052EAD3FB923/xxxxxx.app/Frameworks/FloatingPanel.framework/FloatingPanel
Reason: image not found
```
These are the related forum threads.
- https://developer.apple.com/forums/thread/714629
- https://developer.apple.com/forums/thread/714795
Co-authored-by: atsunori.shioi <astunori.shioi@play.jp>
Shin Yamamoto
