feat(templates): added int and e2e tests to blank and website templates (#12866)

This PR adds int tests with vitest and e2e tests with playwright
directly into our templates.

The following are also updated:
- bumps core turbo to 2.5.4 in monorepo
- blank and website templates moved up to be part of the monorepo
workspace
- this means we now have thes templates filtered out in pnpm commands in
package.json
- they will now by default use workspace packages which we can use for
manual testing and int and e2e tests
  - note that turbo doesnt work with these for dev in monorepo context
- CPA script will fetch latest version and then replace `workspace:*` or
the pinned version in the package.json before installation
- blank template no longer uses _template as a base, this is to simplify
management for workspace
- updated the generate template variations script

examples/astro/website/package.json

@@ -1,5 +1,5 @@
 {
-  "name": "website",
+  "name": "astro-website",
   "version": "0.0.1",
   "type": "module",
   "scripts": {