Add @backbase/nx-plugin and configure the extract-e2e-tests generator…

libs/shared/util/e2e-test-accelerators/.gitignore

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+#  The source files under sub dirs here are always regenerated from the journey packages installed
+#  under node_modules, and therefore should not be edited or checked in to source control.
+#
+#  The sources are copied here for convenience and visibility, and act as accelerators to developing
+#  a suite of e2e tests for your app.
+#
+#  If you want to customise the source code for a test in this dir, copy-paste the test code into
+#  your app's *-e2e test project and edit it there instead.
+#
+*/*

libs/shared/util/e2e-test-accelerators/package.json

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+{
+  "name": "@backbase/e2e-test-accelerators",
+  "private": true
+}

libs/shared/util/e2e-test-accelerators/project.json

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+{
+  "name": "e2e-test-accelerators",
+  "$schema": "../../../../node_modules/nx/schemas/project-schema.json",
+  "tags": ["scope:shared", "type:util", "region:agnostic"]
+}