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.

packages/oas/oas-github-ci/scripts/build-openapi.js

@@ -10,7 +10,8 @@ const withFullFile = process.argv.indexOf("--with-full-file") !== -1
 const v2 = process.argv.indexOf("--v2") !== -1
 const basePath = path.resolve(__dirname, `../`)
 const repoRootPath = path.resolve(basePath, `../../../`)
-const docsApiPath = path.resolve(repoRootPath, "www/apps/api-reference/specs")
+const docsApiPath = v2 ? path.resolve(repoRootPath, "www/apps/api-reference/specs-v2") : 
+  path.resolve(repoRootPath, "www/apps/api-reference/specs")
 
 const run = async () => {
   const oasOutDir = isDryRun ? await getTmpDirectory() : docsApiPath