⭐ feat(api): Add payments with Polar.sh (#264)

## Description
<!-- Briefly describe the purpose and scope of your changes -->


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **New Features**
- Introduced a new subscription API endpoint for managing subscriptions
and products.
- Enhanced subscription management with new entities and
functionalities.
- Added functionality to retrieve current timestamps in both local and
UTC formats.
- Added Polar.sh integration with customer portal and checkout session
creation APIs.

- **Refactor**
- Redesigned team details to now present members and subscription
information instead of a plan type.
  - Enhanced member management by incorporating role assignments.
- Streamlined user data handling and removed legacy subscription event
logic.
  - Simplified error handling in actor functions for better clarity.
  - Updated plan types and UI labels to reflect new subscription tiers.
  - Improved database indexing for Steam user data.

- **Chores**
- Updated the database schema with new tables and fields to support
subscription, team, and member enhancements.
  - Extended identifier prefixes to broaden system integration.
- Added new secrets related to pricing plans in infrastructure
configuration.
  - Configured API and auth routing with new domain and routing rules.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

packages/functions/sst-env.d.ts

@@ -57,10 +57,34 @@ declare module "sst" {
       "type": "sst.sst.Secret"
       "value": string
     }
+    "NestriFamilyMonthly": {
+      "type": "sst.sst.Secret"
+      "value": string
+    }
+    "NestriFamilyYearly": {
+      "type": "sst.sst.Secret"
+      "value": string
+    }
+    "NestriFreeMonthly": {
+      "type": "sst.sst.Secret"
+      "value": string
+    }
+    "NestriProMonthly": {
+      "type": "sst.sst.Secret"
+      "value": string
+    }
+    "NestriProYearly": {
+      "type": "sst.sst.Secret"
+      "value": string
+    }
     "PolarSecret": {
       "type": "sst.sst.Secret"
       "value": string
     }
+    "PolarWebhookSecret": {
+      "type": "sst.sst.Secret"
+      "value": string
+    }
     "Realtime": {
       "authorizer": string
       "endpoint": string