Migrations work

This code actually enables migrations by running migrations on
initialization before any other code runs.

src/rust/models.rs

@@ -1,4 +1,13 @@
 use diesel::prelude::*;
+use diesel::sqlite::SqliteConnection;
+use diesel_migrations::{embed_migrations, EmbeddedMigrations, MigrationHarness};
+
+pub const MIGRATIONS: EmbeddedMigrations = embed_migrations!("src/rust/migrations");
+
+pub fn run_migrations(conn: &mut SqliteConnection) -> bool {
+    conn.run_pending_migrations(MIGRATIONS).unwrap();
+    true
+}
 
 #[derive(Queryable)]
 pub struct Image {