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/Tabs/index.tsx

@@ -0,0 +1,48 @@
+"use client"
+
+import React from "react"
+import { Tabs as UiTabs } from "@medusajs/ui"
+import { ComponentProps } from "react"
+import clsx from "clsx"
+import { Key } from "types"
+
+export const Tabs = (props: ComponentProps<typeof UiTabs> & Key) => (
+  <UiTabs {...props} />
+)
+
+export const TabsList = ({
+  className,
+  ...props
+}: ComponentProps<typeof UiTabs.List> & Key) => (
+  <UiTabs.List {...props} className={clsx(className, "gap-docs_0.5")} />
+)
+
+export const TabsTrigger = ({
+  className,
+  ...props
+}: ComponentProps<typeof UiTabs.Trigger> & Key) => (
+  <UiTabs.Trigger
+    {...props}
+    className={clsx(
+      className,
+      "px-[10px] py-docs_0.25 data-[state=active]:text-ui-fg-base data-[state=active]:bg-ui-bg-base data-[state=active]:shadow-elevation-card-rest",
+      "hover:text-ui-fg-base focus-visible:border-ui-border-interactive focus-visible:!shadow-borders-focus focus-visible:bg-ui-bg-base"
+    )}
+  />
+)
+
+type TabsContentWrapperProps = {
+  className?: string
+  children: React.ReactNode
+}
+
+export const TabsContentWrapper = ({
+  className,
+  ...props
+}: TabsContentWrapperProps) => (
+  <div {...props} className={clsx(className, "mt-docs_0.5")} />
+)
+
+export const TabsContent = (
+  props: ComponentProps<typeof UiTabs.Content> & Key
+) => <UiTabs.Content {...props} />