feat(OHIFv3):Add static e2e data (#2665)

This change wraps the E2E test data into a github repository, which is then included in the test builds as static data.
That makes running the e2e tests as simple as:
yarn test:e2e:server
yarn test:e2e

without any need to have docker etc installed/running.

package.json

@@ -32,13 +32,14 @@
     "orthanc:up": "docker-compose -f .docker/Nginx-Orthanc/docker-compose.yml up",
     "start": "yarn run dev",
     "test": "yarn run test:unit",
+    "test:data": "git submodule update --init",
     "test-watch": "jest --collectCoverage --watchAll",
     "test:unit": "jest --collectCoverage",
     "test:unit:ci": "lerna run test:unit:ci --parallel --stream",
     "test:e2e": "lerna run test:e2e --stream",
     "test:e2e:ci": "lerna run test:e2e:ci --stream",
     "test:e2e:dist": "lerna run test:e2e:dist --stream",
-    "test:e2e:serve": "lerna run test:e2e:serve --stream",
+    "test:e2e:serve": "yarn test:data && lerna run test:e2e:serve --stream",
     "see-changed": "lerna changed",
     "docs:preview": "lerna run docs:preview --stream",
     "docs:publish": "chmod +x ./build-and-publish-docs.sh && ./build-and-publish-docs.sh",
@@ -115,7 +116,7 @@
     "unused-webpack-plugin": "2.4.0",
     "webpack": "^5.50.0",
     "webpack-cli": "^4.7.2",
-    "webpack-dev-server": "^3.11.2",
+    "webpack-dev-server": "4.7.3",
     "webpack-hot-middleware": "^2.25.0",
     "webpack-merge": "^5.7.3",
     "workbox-webpack-plugin": "^6.1.5",