bun test matchers and tests (#1526)

* ignore webkit for cherry-pick

* toContain and toBeTruthy

* toBe null, undefined, falsy, toHaveProperty, .not

* markBindings

* remove toHaveProperty, undo ignore webkit, more tests

* undo ignore webkit

* remove bad tests

* check if length property exists for toHaveLength()

* fix call signature

* handle argument that is not an integer

* getLengthOfArray returns u64

* switch to truncate

* toHaveLength() edge cases

* add toBooleanSlow()

* infinity, nan, negative