feat: add template enhancements (#1154)

## Description

General enhancements for templates.

## Changes Made

Added the following changes to the template flow:
- Allow adding document meta settings
- Allow adding email settings
- Allow adding document access & action authentication
- Allow adding recipient action authentication
- Save the state between template steps similar to how it works for
documents

Other changes:
- Extract common fields between document and template flows
- Remove the title field from "Use template" since we now have it as
part of the template flow
- Add new API endpoint for generating templates

## Testing Performed

Added E2E tests for templates and creating documents from templates

packages/lib/server-only/template/get-template-with-details-by-id.ts

@@ -0,0 +1,38 @@
+import { prisma } from '@documenso/prisma';
+import type { TemplateWithDetails } from '@documenso/prisma/types/template';
+
+export type GetTemplateWithDetailsByIdOptions = {
+  id: number;
+  userId: number;
+};
+
+export const getTemplateWithDetailsById = async ({
+  id,
+  userId,
+}: GetTemplateWithDetailsByIdOptions): Promise<TemplateWithDetails> => {
+  return await prisma.template.findFirstOrThrow({
+    where: {
+      id,
+      OR: [
+        {
+          userId,
+        },
+        {
+          team: {
+            members: {
+              some: {
+                userId,
+              },
+            },
+          },
+        },
+      ],
+    },
+    include: {
+      templateDocumentData: true,
+      templateMeta: true,
+      Recipient: true,
+      Field: true,
+    },
+  });
+};