fix: improve xcframework archive file link type detection

[stephanecopin]

• If RSPM cannot infer the link type from file --brief, use otool -l to see if the library is dynamic, and if not default to static.
• Add a subset of the Google Maps Demos to the project.
  • The example needed to be patched, as there's an error with @import GoogleMaps; in the headers for the frameworks otherwise. FYI, the error is:

    external/rules_swift_package_manager~~swift_deps~swiftpkg_ios_maps_sdk/Core/GMSEmpty.m:17:9: fatal error: module 'GoogleMaps' not found
    @import GoogleMaps;
    ~~~~~~~^~~~~~~~~~
    1 error generated.

    I quickly looked into it but couldn't find an easy fix, so patching seemed like the easiest solution.

cc @cgrindel - would love feedback on this! I didn't do any processing on the otool -l command as I didn't think it to be necessary.

Closes #1084

[cgrindel]

@stephanecopin I ran bazel run //:tidy on this branch and updated it. This got the new integration test running. However, there appears to be some absolute paths from your machine somewhere in the code.

[stephanecopin]

Ah my bad, that was leftover code from when I was investigating the @import issue 😅 I've removed it, should be all good now

[cgrindel]

It looks like you do not have any test targets. Can you add one that launches the iOS app or at least a build_test that ensures that the iOS app builds?

[stephanecopin]

@cgrindel ah right, I've added a build_test as the example will not launch without a valid Google Maps API key.

[cgrindel]

It looks like you forgot to add load("@bazel_skylib//rules:build_test.bzl", "build_test") to the file with the build_test.

[stephanecopin]

Ah my bad! That's what you get for doing that late 😅 I've updated & verified it passes locally, so hopefully should be all good now