feat: impl auth challenges interfaces for mariadb

db/db-sqlx-maria/migrations/20230610113728_mcaptcha_challenge.sql

@@ -0,0 +1,20 @@
+CREATE TABLE IF NOT EXISTS mcaptcha_challenge_reason (
+	id INT auto_increment,
+	PRIMARY KEY(id),
+	name VARCHAR(40) NOT NULL UNIQUE
+);
+
+CREATE TABLE IF NOT EXISTS mcaptcha_challenge (
+	id INT auto_increment,
+	PRIMARY KEY(id),
+	reason INT NOT NULL,
+	challenge_id varchar(40) NOT NULL UNIQUE,
+	received timestamp NOT NULL DEFAULT now(),
+
+	CONSTRAINT `fk_mcaptcha_mcaptcha_challenge_reason`
+		FOREIGN KEY (reason)
+		REFERENCES mcaptcha_challenge_reason (id)
+		ON DELETE CASCADE
+		ON UPDATE CASCADE
+
+);