feat(ios): add local beta release flow (#42991)

Merged via squash.

Prepared head SHA: 82b38fe93b
Co-authored-by: ngutman <1540134+ngutman@users.noreply.github.com>
Co-authored-by: ngutman <1540134+ngutman@users.noreply.github.com>
Reviewed-by: @ngutman

scripts/ios-beta-archive.sh

@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+usage() {
+  cat <<'EOF'
+Usage:
+  scripts/ios-beta-archive.sh [--build-number 7]
+
+Archives and exports a beta-release IPA locally without uploading.
+EOF
+}
+
+BUILD_NUMBER="${IOS_BETA_BUILD_NUMBER:-}"
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --)
+      shift
+      ;;
+    --build-number)
+      BUILD_NUMBER="${2:-}"
+      shift 2
+      ;;
+    -h|--help)
+      usage
+      exit 0
+      ;;
+    *)
+      echo "Unknown argument: $1" >&2
+      usage
+      exit 1
+      ;;
+  esac
+done
+
+(
+  cd "${ROOT_DIR}/apps/ios"
+  IOS_BETA_BUILD_NUMBER="${BUILD_NUMBER}" fastlane ios beta_archive
+)