Add FAQ: iOS SDK install size (#155)

Answers a common question about how much SuperwallKit adds to
app size on iOS (~7.7 MB install size), with a link to Emerge Tools
for tracking the latest number.

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: anglinb

content/docs/support/faq/how-much-does-superwall-increase-app-size-on-ios.mdx

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+---
+title: "How much does Superwall increase app size on iOS?"
+---
+
+The SuperwallKit iOS SDK adds approximately **7.7 MB** to your app's install size — that is, the space it occupies on-device after installation. The actual download size from the App Store will be smaller, since Apple applies compression during delivery.
+
+You can track the latest SDK size on [Emerge Tools](https://www.emergetools.com/app/example/ios/SuperwallKit/release).