feat: add file storage service and update configurations

refactor: migrate to tsup for builds and update tsconfigs
fix: update error handling and validation in payment service
chore: update package scripts and dependencies
docs: update README and env examples

packages/database/.eslintrc.js

@@ -0,0 +1,16 @@
+/** @type {import("eslint").Linter.Config} */
+module.exports = {
+  extends: ['@repo/eslint-config/library.js'],
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    project: true,
+  },
+  rules: {
+    'turbo/no-undeclared-env-vars': [
+      'error',
+      {
+        allowList: ['NODE_ENV'],
+      },
+    ],
+  },
+};