[Feature] Simple and elegant data driven parameterized tests

[NikkTod]

Hello Playwright team, currentlly for passing parameters in tests we can use 'for loop'.

// example.spec.ts
const people = ['Alice', 'Bob'];
for (const name of people) {
  test(`testing with ${name}`, async () => {
  });
}

We tent to use multiple params and I was wondering if it is possible to have more elegant and easy to read representation like we have for example in other test runners:

NUnit:

[TestCase(10,10,10,90)]
[TestCase(10,10,0,100)]
public void testCalculate(double price,int quantity,double discount,double expectedFinalAmount) {...}

Cucumber:

Scenario Outline:  Test Name
 Examples:
    | start | eat | left |
    |  12   |   5  |   7   |
    |  20   |   5  |  15  |

Jest

test.each`
  a    | b    | expected
  ${1} | ${1} | ${2}
  ${1} | ${2} | ${3}
  ${2} | ${1} | ${3}
`('returns $expected when $a is added to $b', ({a, b, expected}) => { expect(a + b).toBe(expected); });

[aslushnikov]

This looks like a dupe of #7036

Please upvote that issue to bump its priority; also, please share your usecase in the comments!