feat(compiler-core): switch to @babel/parser for expression parsing

This enables default support for parsing bigInt, optional chaining
    and nullish coalescing, and also adds the `expressionPlugins`
    compiler option for enabling additional parsing plugins listed at
    https://babeljs.io/docs/en/next/babel-parser#plugins.

packages/compiler-core/__tests__/transforms/transformExpressions.spec.ts

@@ -380,7 +380,65 @@ describe('compiler: expression transform', () => {
     const onError = jest.fn()
     parseWithExpressionTransform(`{{ a( }}`, { onError })
     expect(onError.mock.calls[0][0].message).toMatch(
-      `Invalid JavaScript expression.`
+      `Error parsing JavaScript expression: Unexpected token`
     )
   })
+
+  describe('ES Proposals support', () => {
+    test('bigInt', () => {
+      const node = parseWithExpressionTransform(
+        `{{ 13000n }}`
+      ) as InterpolationNode
+      expect(node.content).toMatchObject({
+        type: NodeTypes.SIMPLE_EXPRESSION,
+        content: `13000n`,
+        isStatic: false,
+        isConstant: true
+      })
+    })
+
+    test('nullish colescing', () => {
+      const node = parseWithExpressionTransform(
+        `{{ a ?? b }}`
+      ) as InterpolationNode
+      expect(node.content).toMatchObject({
+        type: NodeTypes.COMPOUND_EXPRESSION,
+        children: [{ content: `_ctx.a` }, ` ?? `, { content: `_ctx.b` }]
+      })
+    })
+
+    test('optional chaining', () => {
+      const node = parseWithExpressionTransform(
+        `{{ a?.b?.c }}`
+      ) as InterpolationNode
+      expect(node.content).toMatchObject({
+        type: NodeTypes.COMPOUND_EXPRESSION,
+        children: [
+          { content: `_ctx.a` },
+          `?.`,
+          { content: `b` },
+          `?.`,
+          { content: `c` }
+        ]
+      })
+    })
+
+    test('Enabling additional plugins', () => {
+      // enabling pipeline operator to replace filters:
+      const node = parseWithExpressionTransform(`{{ a |> uppercase }}`, {
+        expressionPlugins: [
+          [
+            'pipelineOperator',
+            {
+              proposal: 'minimal'
+            }
+          ]
+        ]
+      }) as InterpolationNode
+      expect(node.content).toMatchObject({
+        type: NodeTypes.COMPOUND_EXPRESSION,
+        children: [{ content: `_ctx.a` }, ` |> `, { content: `_ctx.uppercase` }]
+      })
+    })
+  })
 })