[deep link] [ios app check] Request ios build option and add a dropdown for it

[hangyujin]

issue : https://github.com/flutter/devtools/issues/7799 This is part of adding ios app check,

my plan is : step 1 add ios build option <---- this PR step 2 load ios links step 3 cross check them with android links

Pre-launch Checklist

• [ ] I read the Contributor Guide and followed the process outlined there for submitting PRs.
• [ ] I read the Tree Hygiene wiki page, which explains my responsibilities.
• [ ] I read the Flutter Style Guide recently, and have followed its advice.
• [ ] I signed the CLA.
• [ ] I listed at least one issue that this PR fixes in the description above.
• [ ] I updated/added relevant documentation (doc comments with ///).
• [ ] I added new tests to check the change I am making, or there is a reason for not adding tests.

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[hangyujin]

I will add a flag first https://github.com/flutter/devtools/pull/7842 and put the feature changes behind the flag.