Initial attempt for e2e tests

.github/workflows/e2e.yml

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+name: e2e
+
+on:
+  workflow_dispatch:
+
+jobs:
+  e2e:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - nickname: win
+            os: windows-2019
+            graal: 22.0.0.2
+          - nickname: macos
+            os: macos-latest
+            graal: 22.0.0.2
+          - nickname: linux
+            os: ubuntu-latest
+            graal: 22.0.0.2
+    name: CI Native ${{ matrix.nickname }}
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-java@v2
+        with:
+          distribution: adopt
+          java-version: 11
+          cache: maven
+      - uses: graalvm/setup-graalvm@v1
+        with:
+          version: ${{ matrix.graal }}
+          java-version: 11
+          components: native-image
+          set-java-home: false
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+      - uses: actions/setup-node@v2
+        with:
+          node-version: '14'
+      - run: |
+          ./mvnw clean package -Pnative
+      - name: compile e2e module
+        working-directory: e2e/spring-shell-e2e
+        run: |
+          npm install
+          npm run build
+      - name: run e2e tests
+        working-directory: e2e/spring-shell-e2e-tests
+        run: |
+          npm install
+          npm test

e2e/spring-shell-e2e-tests/.gitignore

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+node_modules

e2e/spring-shell-e2e-tests/.prettierignore

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+# dont care about typings
+types/
+
+# for test data
+test/data/

e2e/spring-shell-e2e-tests/.prettierrc.json

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+{
+    "printWidth": 120,
+    "tabWidth": 2,
+    "useTabs": false,
+    "semi": true,
+    "singleQuote": true,
+    "trailingComma": "none",
+    "bracketSpacing": true,
+    "arrowParens": "avoid",
+    "parser": "typescript"
+  }

e2e/spring-shell-e2e-tests/jest.config.js

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+module.exports = {
+  clearMocks: true,
+  moduleFileExtensions: ['js', 'ts'],
+  testEnvironment: 'node',
+  testMatch: ['**/*.test.ts'],
+  testRunner: 'jest-circus/runner',
+  transform: {
+    '^.+\\.ts$': 'ts-jest'
+  },
+  verbose: true,
+  setupFilesAfterEnv: ['jest-extended', '@alex_neo/jest-expect-message']
+}