feat: force signature fields for document signers (#1139)

## Description

Show a dialog when the document has signers with no signature fields
placed.

## Changes Made

Created a new dialog that'll be triggered when the document owner tries
to send a document to the signers without placing signature fields. The
document owners can't proceed to the next step unless they add signature
fields.

## Checklist

- [x] I have tested these changes locally and they work as expected.
- [ ] I have added/updated tests that prove the effectiveness of these
changes.
- [ ] I have updated the documentation to reflect these changes, if
applicable.
- [x] I have followed the project's coding style guidelines.
- [ ] I have addressed the code review feedback from the previous
submission, if applicable.




https://github.com/documenso/documenso/assets/25515812/f1b5c34e-2ce0-40e3-804c-f05d23045710




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

- **New Features**
- Introduced "Direct Links" for async signing, allowing users to create
documents from templates using public links.
- Added `MissingSignatureFieldDialog` component to ensure users don't
miss adding signature fields.

- **Enhancements**
- Updated blog content to provide guidance on contract management and
announce new pricing plans.

- **Bug Fixes**
  - Improved async signing process for better efficiency and control.

- **Refactor**
- Improved internal code structure and import order for stripe-related
functionality.

- **Tests**
- Enhanced e2e tests to verify signature presence before document
creation and updated test flows for document approval.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Co-authored-by: David Nguyen <davidngu28@gmail.com>

packages/ee/server-only/stripe/get-document-related-prices.ts.ts

@@ -6,5 +6,9 @@ import { getPricesByPlan } from './get-prices-by-plan';
  * Returns the Stripe prices of items that affect the amount of documents a user can create.
  */
 export const getDocumentRelatedPrices = async () => {
-  return await getPricesByPlan([STRIPE_PLAN_TYPE.REGULAR, STRIPE_PLAN_TYPE.COMMUNITY, STRIPE_PLAN_TYPE.ENTERPRISE]);
+  return await getPricesByPlan([
+    STRIPE_PLAN_TYPE.REGULAR,
+    STRIPE_PLAN_TYPE.COMMUNITY,
+    STRIPE_PLAN_TYPE.ENTERPRISE,
+  ]);
 };

packages/ee/server-only/stripe/get-prices-by-interval.ts

@@ -1,7 +1,7 @@
 import type Stripe from 'stripe';
 
-import { stripe } from '@documenso/lib/server-only/stripe';
 import type { STRIPE_PLAN_TYPE } from '@documenso/lib/constants/billing';
+import { stripe } from '@documenso/lib/server-only/stripe';
 
 // Utility type to handle usage of the `expand` option.
 type PriceWithProduct = Stripe.Price & { product: Stripe.Product };

packages/ee/server-only/stripe/get-primary-account-plan-prices.ts

@@ -6,5 +6,9 @@ import { getPricesByPlan } from './get-prices-by-plan';
  * Returns the prices of items that count as the account's primary plan.
  */
 export const getPrimaryAccountPlanPrices = async () => {
-  return await getPricesByPlan([STRIPE_PLAN_TYPE.REGULAR, STRIPE_PLAN_TYPE.COMMUNITY, STRIPE_PLAN_TYPE.ENTERPRISE]);
+  return await getPricesByPlan([
+    STRIPE_PLAN_TYPE.REGULAR,
+    STRIPE_PLAN_TYPE.COMMUNITY,
+    STRIPE_PLAN_TYPE.ENTERPRISE,
+  ]);
 };