Add subscriptions

[cdterry87]

To monetize the app, it would be most beneficial to offer a subscription. Possibly use Laravel Cashier with Stripe?

Free Tier

• Create a private account profile; Private profiles are not visible to other users
• View public recipes
• Rate recipes

Basic Tier - $15/yr

• Everything in Free Tier
• Create your own private recipes; Private recipes are not visible to other users
• Save public recipes and view them on the "Saved Recipes" page

Premium Tier - $30/yr

• Everything in Basic Tier
• Ability to set recipes to public; Public recipes are visible to other users
• Ability to set profile to public; Public profiles are visible to other users and to view user's public recipe