feat: finish the fleets plugin, add ctx.hosts and host-commands SDK (B4)

plugins/fleets/migrations/mysql/0001_adopt_fleets.sql

@@ -0,0 +1,42 @@
+-- fleets 0001: adopt_fleets
+-- Generated by termix-plugin migrations. Review before committing.
+
+CREATE TABLE IF NOT EXISTS `fleets` (
+  `id` int AUTO_INCREMENT PRIMARY KEY,
+  `user_id` varchar(255) NOT NULL,
+  `name` text NOT NULL,
+  `description` text,
+  `color` text,
+  `icon` text,
+  `tag_rules` text,
+  `sync_id` varchar(255) UNIQUE,
+  `created_at` text NOT NULL DEFAULT (CURRENT_TIMESTAMP),
+  `updated_at` text NOT NULL DEFAULT (CURRENT_TIMESTAMP),
+  FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE
+);
+RENAME TABLE `fleets` TO `p_fleets_fleets`;
+CREATE TABLE IF NOT EXISTS `fleet_members` (
+  `id` int AUTO_INCREMENT PRIMARY KEY,
+  `fleet_id` int NOT NULL,
+  `host_id` int NOT NULL,
+  `added_at` text NOT NULL DEFAULT (CURRENT_TIMESTAMP),
+  FOREIGN KEY (`fleet_id`) REFERENCES `p_fleets_fleets` (`id`) ON DELETE CASCADE,
+  FOREIGN KEY (`host_id`) REFERENCES `ssh_data` (`id`) ON DELETE CASCADE
+);
+RENAME TABLE `fleet_members` TO `p_fleets_members`;
+CREATE TABLE IF NOT EXISTS `fleet_inventory` (
+  `id` int AUTO_INCREMENT PRIMARY KEY,
+  `host_id` int NOT NULL,
+  `user_id` varchar(255) NOT NULL,
+  `os_pretty_name` text,
+  `kernel` text,
+  `architecture` text,
+  `hostname` text,
+  `uptime_seconds` int,
+  `ip` text,
+  `package_manager` text,
+  `collected_at` text NOT NULL DEFAULT (CURRENT_TIMESTAMP),
+  FOREIGN KEY (`host_id`) REFERENCES `ssh_data` (`id`) ON DELETE CASCADE,
+  FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE
+);
+RENAME TABLE `fleet_inventory` TO `p_fleets_inventory`;