Add a script to download the ios dependencies

We need libgit2 / libssh2 / openssl in order for our app.

scripts/download_ios_frameworks.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+
+set -eux
+
+cd "$(dirname "$0")"/../ios
+
+rm -rf libs
+mkdir -p libs
+cd libs
+
+curl -J -L \
+    https://github.com/GitJournal/build-openssl-ios/releases/download/v1.1.1b/release.tgz \
+    -o release_openssl.tar.gz
+
+curl -J -L \
+    https://github.com/GitJournal/ios-libraries/releases/download/v1.0/release.tgz \
+    -o release.tar.gz
+
+tar -xf release_openssl.tar.gz
+rm -rf release_openssl.tar.gz
+
+tar -xf release.tar.gz
+rm -rf release.tar.gz