Curations for local podspecs

[timo-HERE]

Since local podspecs (#5175) are not yet supported, can you give any recommendations what kind of curation could be used as a workaround?

We have Flutter project where dependencies are downloaded by Pub and made available for iOS build as local dependencies.

pubspec.yaml

dependencies:
  flutter:
    sdk: flutter
  flutter_localizations:
    sdk: flutter
...
  url_launcher: ^6.2.5

ios/Podfile.lock

PODS:
  - url_launcher_ios (0.0.1):
    - Flutter
...
DEPENDENCIES:
  - url_launcher_ios (from `.symlinks/plugins/url_launcher_ios/ios`)...
...
EXTERNAL SOURCES:
  url_launcher_ios:
    :path: ".symlinks/plugins/url_launcher_ios/ios"

The problem is that the Podspec has always version 0.0.1 regardless of Pub package version, so we really cannot point ORT to GitHub.
You can see this by comparing https://github.com/flutter/packages/blob/url_launcher-v6.1.10/packages/url_launcher/url_launcher_ios/ios/url_launcher_ios.podspec and
https://github.com/flutter/packages/blob/url_launcher-v6.2.5/packages/url_launcher/url_launcher_ios/ios/url_launcher_ios.podspec

Also concluding license for Pod::url_launcher_ios:0.0.1 feels wrong, as it would be used for every version now and in the future.