Is there a way to export to SQL file for Tables/Functions for addition to codebase?

I maintain my own .sql file with the commands to completely replicate/recreate a project that I'm working on. This allows all developers (it's an open source project) to create their own supabase instance to test locally and work on their own dev/local version. But, it would be much easier if I could just run a command and export all my table structures (no data) and functions so that I can guarantee that what I have is the latest and working. Is that possible? Additionally, is there any way to link a github repo to a database instance so that it keeps the structure in the code repo?

Thank you!