feat: new matchers

[dtengeri]

Implementing matchers of the list in #1

• [ ] expect.extend(matchers)
• [ ] expect.anything()
• [ ] expect.any(constructor)
• [ ] expect.arrayContaining(array)
• [ ] expect.assertions(number)
• [ ] expect.hasAssertions()
• [ ] expect.not.arrayContaining(array)
• [ ] expect.not.objectContaining(object)
• [ ] expect.not.stringContaining(string)
• [ ] expect.not.stringMatching(string | regexp)
• [ ] expect.objectContaining(object)
• [ ] expect.stringContaining(string)
• [ ] expect.stringMatching(string | regexp)
• [ ] expect.addSnapshotSerializer(serializer)
• [ ] .toHaveLength(number)
• [ ] .toHaveProperty(keyPath, value?)
• [ ] .toBeCloseTo(number, numDigits?)
• [ ] .toBeDefined()
• [x] .toBeFalsy()
• [x] .toBeGreaterThan(number | bigint)
• [x] .toBeGreaterThanOrEqual(number | bigint)
• [x] .toBeLessThan(number | bigint)
• [x] .toBeLessThanOrEqual(number | bigint)
• [x] .toBeInstanceOf(Class)
• [x] .toBeNull()
• [x] .toBeTruthy()
• [ ] .toBeUndefined()
• [ ] .toBeNaN()
• [ ] .toContain(item)
• [ ] .toContainEqual(item)
• [x] .toMatch(regexp | string)
• [ ] .toMatchObject(object)
• [ ] .toMatchSnapshot(propertyMatchers?, hint?)
• [ ] .toMatchInlineSnapshot(propertyMatchers?, inlineSnapshot)
• [ ] .toStrictEqual(value)
• [ ] .toThrow(error?)
• [ ] .toThrowErrorMatchingSnapshot(hint?)
• [ ] .toThrowErrorMatchingInlineSnapshot(inlineSnapshot)

[CLAassistant]

All committers have signed the CLA.

[dtengeri]

@rrousselGit I am not sure about the usefulness of toBeFalsy() and toBeTruthy(), I am happy to remove them.

[rrousselGit]

Sorry for the delay. Thanks for this!