Moved migrations into backend

backend/migrations/20260422094706_ticket_table.down.sql

@@ -0,0 +1,2 @@
+DROP TABLE tickets;
+

backend/migrations/20260422094706_ticket_table.sql

@@ -0,0 +1,10 @@
+CREATE TABLE IF NOT EXISTS tickets (
+    id INTEGER GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+    category VARCHAR(20) NOT NULL DEFAULT 'Sonstiges',
+    betreff VARCHAR(100),
+    description TEXT,
+    room SMALLINT,
+    status VARCHAR(15) NOT NULL DEFAULT 'ToDo',
+    date TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    user_id SMALLINT DEFAULT 1
+);

backend/migrations/20260422094717_user_table.down.sql

@@ -0,0 +1 @@
+DROP TABLE users;

backend/migrations/20260422094717_user_table.sql

@@ -0,0 +1,8 @@
+CREATE TABLE users (
+    id SMALLINT GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+    last_name VARCHAR(30),
+    first_name VARCHAR(30),
+    username VARCHAR(30),
+    pwd TEXT,
+    is_admin BOOLEAN NOT NULL DEFAULT false
+);