Summary:
This change refactors the script to prebuild ios dependencies by:
- remove the manually maintained Package.swift
- add script to generate it starting from the configurations that we have
bypass-github-export-checks
## Changelog:
[INTERNAL] - Factor out script to generate Package.swift file
Reviewed By: cortinico
Differential Revision: D70175760
Pulled By: cipolleschi
fbshipit-source-id: a1b0fc6dcdc1860b04ab260697f259c297338f41