feat: track maximum recorded nonce for captcha levels to render progress bar

db/db-sqlx-maria/migrations/20231029000927_mcaptcha_track_nonce.sql

@@ -0,0 +1,12 @@
+-- Add migration script here
+CREATE TABLE IF NOT EXISTS mcaptcha_track_nonce (
+	level_id INTEGER NOT NULL,
+	nonce INTEGER NOT NULL DEFAULT 0,
+	ID INT auto_increment,
+	PRIMARY KEY(ID),
+	CONSTRAINT `fk_mcaptcha_track_nonce_level_id`
+		FOREIGN KEY (level_id)
+		REFERENCES mcaptcha_levels (level_id)
+		ON DELETE CASCADE
+		ON UPDATE CASCADE
+);