refactor database engine/options; add column descriptors

Signed-off-by: Jason Volk <jason@zemos.net>

src/database/engine/repair.rs

@@ -0,0 +1,16 @@
+use std::path::PathBuf;
+
+use conduwuit::{info, warn, Err, Result};
+use rocksdb::Options;
+
+use super::Db;
+
+pub(crate) fn repair(db_opts: &Options, path: &PathBuf) -> Result {
+	warn!("Starting database repair. This may take a long time...");
+	match Db::repair(db_opts, path) {
+		| Ok(()) => info!("Database repair successful."),
+		| Err(e) => return Err!("Repair failed: {e:?}"),
+	}
+
+	Ok(())
+}