renamed server/ to api/ since this is really only the api portion of the typical fc server

server-api/migrations/2020-02-04-083657_invites/down.sql

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+-- This file should undo anything in `up.sql`
+DROP TABLE `invites`;

server-api/migrations/2020-02-04-083657_invites/up.sql

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+-- @id : id of the invite
+
+-- @expires : unix timestamp of when that invite expries
+-- can be set to null which means it never expires
+
+-- @uses : can be null which means it doesn't have a use limit
+
+-- @max_uses : if this is null uses only ever incremented but we don't care for destroying on that parameter
+CREATE TABLE IF NOT EXISTS `invites` (
+	`id` bigint UNSIGNED NOT NULL,
+	`expires` bigint,
+	`uses` integer, 
+	`max_uses` integer,
+	PRIMARY KEY( `id` )
+);