docs: prep for v2 documentation (#6710)

This PR includes documentation that preps for v2 docs (but doesn't introduce new docs).

_Note: The number of file changes in the PR is due to find-and-replace within the `references` which is unavoidable. Let me know if I should move it to another PR._

## Changes

- Change Medusa version in base OAS used for v2.
- Fix to docblock generator related to not catching all path parameters.
- Added typedoc plugin that generates ER Diagrams, which will be used specifically for data model references in commerce modules.
- Changed OAS tool to output references in `www/apps/api-reference/specs-v2` directory when the `--v2` option is used.
- Added a version switcher to the API reference to switch between V1 and V2. This switcher is enabled by an environment variable, so it won't be visible/usable at the moment.
- Upgraded docusaurus to v3.0.1
- Added new Vale rules to ensure correct spelling of Medusa Admin and module names.
- Added new components to the `docs-ui` package that will be used in future documentation changes.

www/packages/docs-ui/src/components/CardList/index.tsx

@@ -0,0 +1,29 @@
+import React from "react"
+import { Card, CardProps } from "@/components"
+import clsx from "clsx"
+
+type CardListProps = {
+  items: CardProps[]
+  itemsPerRow?: number
+}
+
+export const CardList = ({ items, itemsPerRow }: CardListProps) => {
+  if (!itemsPerRow) {
+    // if length of items is even, set to `2`, else set to `3`
+    itemsPerRow = items.length === 1 ? 0 : items.length % 2 === 0 ? 2 : 3
+  }
+  return (
+    <section
+      className={clsx(
+        "grid gap-x-docs_1 auto-rows-fr gap-y-docs_1",
+        itemsPerRow === 1 && "grid-cols-1",
+        itemsPerRow === 2 && "md:grid-cols-2 grid-cols-1",
+        itemsPerRow === 3 && "lg:grid-cols-3 md:grid-col-2 grid-cols-1"
+      )}
+    >
+      {items.map((item, key) => (
+        <Card {...item} key={key} />
+      ))}
+    </section>
+  )
+}