feat: jsdocs for generated types, by using admin.description (#9917)

This makes use of admin.description to generate JSDocs for field,
collection and global generated types.


![image](https://github.com/user-attachments/assets/980d825f-49a2-426d-933a-2ff3d205ea24)


![image](https://github.com/user-attachments/assets/d0b1f288-1ea1-4d80-8c05-003d59a4e41a)

For the future, we should add a dedicated property to override these
JSDocs.

You can view the effect of this PR on our test suite generated types
here:
05f552bbbc

test/plugin-form-builder/payload-types.ts

@@ -216,6 +216,9 @@ export interface Form {
       )[]
     | null;
   submitButtonLabel?: string | null;
+  /**
+   * Choose whether to display an on-page message or redirect to a different page after they submit the form.
+   */
   confirmationType?: ('message' | 'redirect') | null;
   confirmationMessage?: {
     root: {
@@ -240,6 +243,9 @@ export interface Form {
     } | null;
     url?: string | null;
   };
+  /**
+   * Send custom emails when the form submits. Use comma separated lists to send the same email to multiple recipients. To reference a value from this form, wrap that field's name with double curly brackets, i.e. {{firstName}}. You can use a wildcard {{*}} to output all data and {{*:table}} to format it as an HTML table in the email.
+   */
   emails?:
     | {
         emailTo?: string | null;
@@ -248,6 +254,9 @@ export interface Form {
         replyTo?: string | null;
         emailFrom?: string | null;
         subject: string;
+        /**
+         * Enter the message that should be sent in this email.
+         */
         message?: {
           root: {
             type: string;
@@ -304,6 +313,9 @@ export interface FormSubmission {
   payment?: {
     field?: string | null;
     status?: string | null;
+    /**
+     * Amount in cents
+     */
     amount?: number | null;
     paymentProcessor?: string | null;
     creditCard?: {