[eas-cli] Add search to ad hoc device picker

[sebryu]

Summary

• add opt-in slash-prefixed filtering to the custom EAS multiselect prompt
• enable filtering for the iOS ad hoc provisioning-profile device picker
• make a toggle only currently visible filtered devices
• start new ad hoc profiles with no devices selected while preserving selections from an existing profile
• support compact matching so /apple tv also matches values such as AppleTV6,3

Usage

At the ad hoc device picker:

/apple tv   filter devices
Enter       apply the filter
a           toggle visible devices
Esc         clear the filter (optional)
Enter       submit

Verification

• git diff --check origin/main...HEAD
• yarn install
• yarn build
• manually tested the local easd build against a tvOS credentials flow
• exercised slash search, filtered toggle-all, search clearing, and persisted selections against prompts@2.4.2

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