Write migrations with Diesel

snow-scanner/migrations/2024-06-23-10600_create_scan_tasks_table/down.sql

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+DROP TABLE `scan_tasks`;

snow-scanner/migrations/2024-06-23-10600_create_scan_tasks_table/up.sql

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+CREATE TABLE IF NOT EXISTS `scan_tasks` (
+    task_group_id VARCHAR(255) NOT NULL,
+    cidr VARCHAR(255) NOT NULL,
+    created_by_username VARCHAR(255) NOT NULL,
+    created_at DATETIME NOT NULL,
+    updated_at DATETIME NULL,
+    started_at DATETIME NULL,
+    still_processing_at DATETIME NULL,
+    ended_at DATETIME NULL,
+    PRIMARY KEY (task_group_id, cidr)
+);