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/typescript-config/library.json

@@ -0,0 +1,11 @@
+{
+  "$schema": "https://json.schemastore.org/tsconfig",
+  "extends": "./base.json",
+  "compilerOptions": {
+    "declaration": true,
+    "declarationMap": true,
+    "incremental": false,
+    "noEmit": false
+  },
+  "exclude": ["node_modules", "dist", "**/*.test.*", "**/*.spec.*"]
+}