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/trpc/server/field-router/router.ts

@@ -53,7 +53,7 @@ export const fieldRouter = router({
       const { templateId, fields } = input;
 
       try {
-        await setFieldsForTemplate({
+        return await setFieldsForTemplate({
           userId: ctx.user.id,
           templateId,
           fields: fields.map((field) => ({