feat: sql to migrate to new format

db/migrations/3_minecraft-server-migrate.sql

@@ -0,0 +1,18 @@
+-- Create the new table
+CREATE TABLE IF NOT EXISTS minecraft
+(
+    server_discord   integer not null,
+    server_minecraft text    not null,
+    PRIMARY KEY (server_discord, server_minecraft),
+    FOREIGN KEY (server_discord) REFERENCES servers (server)
+);
+
+-- Import in the data
+INSERT INTO minecraft (server_discord, server_minecraft)
+SELECT server, server_minecraft
+FROM servers
+where server_minecraft is not null;
+
+-- delete the col in teh server table
+ALTER TABLE servers
+    DROP COLUMN server_minecraft;