feat: add Jest to AVA pattern

[sullvn]

Work-in-progress pattern for converting Jest tests to AVA tests.

Minimal test case:

test('test name', () => {
  const actual = { value: 3 }
  expect(actual).toEqual({ value: 3 })
  expect(actual).not.toEqual({ value: 4 })

  const ref1 = { singleton: true }
  const ref2 = ref1
  expect(ref1).toBe(ref2)
  expect(ref1).not.toBe({ singleton: true })

  expect([0, 1, 2]).toHaveLength(3)
  expect([0, 1, 2]).not.toHaveLength(4)

  expect(Math.PI).toBeCloseTo(3.14, 5)
  expect(Math.PI).not.toBeCloseTo(3.14, 5)
  expect(Math.PI).toBeCloseTo(3.14)
  expect(Math.PI).not.toBeCloseTo(3.14)

  const testRegex = /123?/
  expect('12').toMatch(testRegex)
  expect('ab').toMatch(/abc?/)
  expect('xyz').toMatch('xyz')
})

Should result in:

test('test name', t => {
  const actual = { value: 3 }
  t.deepEqual(actual, { value: 3 })
  t.notDeepEqual(actual, { value: 4 })

  const ref1 = { singleton: true }
  const ref2 = ref1
  t.is(ref1, ref2)
  t.not(ref1, { singleton: true })

  t.is([0, 1, 2].length, 3)
  t.not([0, 1, 2].length, 4)

  t.true(Math.abs(Math.PI - 3.14) < 10 ** -5 / 2)
  t.false(Math.abs(Math.PI - 3.14) < 10 ** -5 / 2)
  t.true(Math.abs(Math.PI - 3.14) < 0.005)
  t.false(Math.abs(Math.PI - 3.14) < 0.005)

  const testRegex = /123?/
  t.regex('12', testRegex)
  t.regex('ab', /abc?/)
  t.is('xyz', 'xyz')})