chore: remove type: module, create openmct-e2e subpackage (#7590)

* fix: remove mystery webpack code

* fix: remove type:module and specify exports

- we aren't a module... yet

* fix: rename webpack*.js to webpack*.mjs so we can use import/export. fix imports

* fix: exports format

* fix: woops, need to add `start` script back

* chore: split e2e into its own module

* fix: use normal Painterro import

* fix: update e2e pathing

* fix: copy over helper functions

* chore: specify `cwd` for playwright configs so that openmct npm commands work as intended in any environment

* chore: add pretest script to e2e package.json

* chore: don't package e2e

* refactor: tidy up webpack common config

* chore: compile types to a single file

* chore: fix visual test npm scripts

* chore: fix import pathing

* chore: define package exports, move test specific dependencies to the subpackage

* chore: export test framework from openmct-e2e

* chore: export baseFixtures also

* chore: let `openmct` and `openmct-e2e` share `node_modules/`

* chore: use `--workspace`, remove pretest script

* Revert "fix: remove mystery webpack code"

This reverts commit eb14d52569ffa27ab1a090b883694f4707b59cd0.

* chore: update package-lock

* chore: add `.npmignore`

* fix: *js -> mjs

e2e/playwright-performance-dev.config.js

@@ -10,6 +10,7 @@ const config = {
   workers: 1, //Only run in serial with 1 worker
   webServer: {
     command: 'npm run start', //need development mode for performance.marks and others
+    cwd: '../', // Provide cwd for the root of the project
     url: 'http://localhost:8080/#',
     timeout: 200 * 1000,
     reuseExistingServer: false