[apple][v0.8] Define the deployment target in the frameworks metadata

[alloy]

Fixes #420

Summary

Apple App Store submission, at least the iOS one, requires this metadata to be specified when only targeting a subset of possible archs.

Test Plan

(Taken from #428)

~/tmp » curl -L -O https://12725-154201259-gh.circle-artifacts.com/0/tmp/hermes/output/hermes-engine-darwin-v0.7.1.tgz
~/tmp » tar -zvxf hermes-engine-darwin-v0.7.1.tgz
~/tmp » cd package/
~/t/package » node unpack-tarball.js
~/t/package » /usr/libexec/PlistBuddy -c 'Print :MinimumOSVersion' destroot/Library/Frameworks/iphoneos/hermes.framework/Info.plist
10.0
~/t/package » /usr/libexec/PlistBuddy -c 'Print :LSMinimumSystemVersion' destroot/Library/Frameworks/macosx/hermes.framework/Resources/Info.plist
10.13

[alloy]

@Huxpro What’s the status re #418 and making CI pass?

[Huxpro]

@alloy Thanks. I haven't got chance working on #418. Could you please retarget this PR to the 0.7 branch (or maybe fire another one and keep this one)?

[alloy]

Ah gotcha. Will do 👍

[facebook-github-bot]

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[facebook-github-bot]

@Huxpro merged this pull request in f74ea80.