Add user management

backend/internal/database/init_sqlite.go

@@ -59,6 +59,14 @@ CREATE TABLE IF NOT EXISTS deployments (
     start_time TIMESTAMP NOT NULL DEFAULT 0,
     finish_time TIMESTAMP NOT NULL DEFAULT 0,
     created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE IF NOT EXISTS users (
+    id TEXT PRIMARY KEY,
+    name TEXT NOT NULL UNIQUE,
+    role TEXT NOT NULL,
+    hashed_password TEXT NOT NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
 )
 `)