Adds command to install apps from the AppStore (#545)

tools/api/commands/install_appstore_application

@@ -0,0 +1,14 @@
+#!/bin/bash
+source $MICROMDM_ENV_PATH
+endpoint="v1/commands"
+jq -n \
+  --arg request_type "InstallApplication" \
+  --arg udid "$1" \
+  --arg identifier "$2" \
+  '.udid = $udid
+  |.request_type = $request_type
+  |.identifier = $identifier
+  '|\
+  curl $CURL_OPTS \
+    -H "Content-Type: application/json" \
+    -u "micromdm:$API_TOKEN" "$SERVER_URL/$endpoint" -d@-