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

.webpack/webpack.dev.mjs

@@ -0,0 +1,49 @@
+/*
+This configuration should be used for development purposes. It contains full source map, a
+devServer (which be invoked using by `npm start`), and a non-minified Vue.js distribution.
+If OpenMCT is to be used for a production server, use webpack.prod.mjs instead.
+*/
+import { fileURLToPath } from 'node:url';
+
+import path from 'path';
+import webpack from 'webpack';
+import { merge } from 'webpack-merge';
+
+import common from './webpack.common.mjs';
+
+export default merge(common, {
+  mode: 'development',
+  watchOptions: {
+    // Since we use require.context, webpack is watching the entire directory.
+    // We need to exclude any files we don't want webpack to watch.
+    // See: https://webpack.js.org/configuration/watch/#watchoptions-exclude
+    ignored: [
+      '**/{node_modules,dist,docs,e2e}', // All files in node_modules, dist, docs, e2e,
+      '**/{*.yml,Procfile,webpack*.js,babel*.js,package*.json,tsconfig.json}', // Config files
+      '**/*.{sh,md,png,ttf,woff,svg}', // Non source files
+      '**/.*' // dotfiles and dotfolders
+    ]
+  },
+  plugins: [
+    new webpack.DefinePlugin({
+      __OPENMCT_ROOT_RELATIVE__: '"dist/"'
+    })
+  ],
+  devtool: 'eval-source-map',
+  devServer: {
+    devMiddleware: {
+      writeToDisk: (filePathString) => {
+        const filePath = path.parse(filePathString);
+        const shouldWrite = !filePath.base.includes('hot-update');
+
+        return shouldWrite;
+      }
+    },
+    watchFiles: ['**/*.css'],
+    static: {
+      directory: fileURLToPath(new URL('../dist', import.meta.url)),
+      publicPath: '/dist',
+      watch: false
+    }
+  }
+});