Add SQLite database and repositories, remove old routes

Introduces a new SQLite database setup using better-sqlite3, with initialization scripts and repository modules for users, permissions, and licenses. Removes legacy user and register routes and related test files. Updates dependencies to include better-sqlite3, bcryptjs, and ftp-srv.

modules/database.js

@@ -0,0 +1,5 @@
+const path = require("node:path")
+const Database = require("better-sqlite3")
+const databasePath = path.join(process.cwd(), "data", "database.db")
+
+module.exports = new Database(databasePath)

modules/databaseGlobals.js

@@ -0,0 +1,83 @@
+const fs = require("node:fs")
+const path = require("node:path")
+const Database = require("better-sqlite3")
+const databasePath = path.join(process.cwd(), "data", "database.db")
+
+if (!fs.existsSync(path.parse(databasePath).dir)) {
+    fs.mkdirSync(path.parse(databasePath).dir, { recursive: true })
+}
+
+const db = new Database(databasePath)
+
+function initializeDatabase() {
+    db.exec("PRAGMA foreign_keys = ON")
+    db.exec(`
+        CREATE TABLE IF NOT EXISTS accounts (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            firstName TEXT,
+            lastName TEXT,
+            username TEXT NOT NULL UNIQUE,
+            password TEXT NOT NULL,
+            createdAt TEXT DEFAULT CURRENT_TIMESTAMP
+        )
+    `)
+    db.exec(`
+        CREATE TABLE IF NOT EXISTS products (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            name TEXT NOT NULL,
+            owner INTEGER NOT NULL,
+            createdAt TEXT DEFAULT CURRENT_TIMESTAMP,
+            
+            FOREIGN KEY(owner)
+                REFERENCES accounts(id)
+                ON DELETE CASCADE
+        )
+    `)
+
+    db.exec(`
+        CREATE TABLE IF NOT EXISTS permissions (
+            id INTEGER PRIMARY KEY,
+            userId INTEGER NOT NULL,
+            productId INTEGER NOT NULL,
+            channel TEXT DEFAULT '*', 
+            permission TEXT NOT NULL,
+            
+            FOREIGN KEY(userId)
+                REFERENCES accounts(id)
+                ON DELETE CASCADE,
+            FOREIGN KEY(productId)
+                REFERENCES products(id)
+                ON DELETE CASCADE
+            
+            UNIQUE(
+                userId,
+                channel,
+                productId,
+                permission
+            )
+        )
+    `)
+
+    db.exec(`
+        CREATE TABLE IF NOT EXISTS licenses (
+            id INTEGER PRIMARY KEY,
+            key TEXT NOT NULL UNIQUE,
+            productId INTEGER NOT NULL,
+            targetIhannel TEXT NOT NULL,
+            userId INTEGER DEFAULT NULL,
+            usedAt TEXT,
+            
+            FOREIGN KEY(productId)
+                REFERENCES products(id)
+                ON DELETE CASCADE,
+
+            FOREIGN KEY(userId)
+                REFERENCES accounts(id)
+                ON DELETE SET NULL
+        )
+    `)
+}
+
+module.exports = {
+    initializeDatabase
+}