Editorial: clarify ordinary and exotic object definitions and creation (

#1460)

Closes #1453.

* Defines ordinary objects as having the ordinary internal methods, and exotic objects as not having the ordinary internal methods.

* Introduces AllocateBasicObject, which now is the only source of object creation, centralizing the undefined phrase "a newly created object" or "newly created X exotic object" into one location.

* Introduces explicit definitions for every type of exotic object in terms of how they override the internal methods. This makes phrases like "x is an Array exotic object" well-defined.

* Renames ObjectCreate to OrdinaryObjectCreate, and clarifies how it should be used.

* Fixes immutable prototype exotic objects to not inaccurately state that they always have default internal methods besides [[SetPrototypeOf]]; this is not the case for web platform objects, for example. This involved then expanding the definition of %ObjectPrototype% a bit to be more explicit about its internal slots and methods.

* Improves missing or contradictory internal slot installation, e.g. the introduction for function objects said they had "the same internal slots" as other ordinary objects, but FunctionAllocate installed a list of slots that was missing [[Prototype]] and [[Extensible]].

* Deduplicates setting [[Extensible]] to its default true value.

* Clarifies with a note that CreateUnmappedArgumentsObject does not create an exotic object, despite being in the "Arguments Exotic Objects" clause.

* Slightly reduces the coupling between IntegerIndexedObjectCreate and CreateTypedArray by changing how arguments are passed.* Uses the phrase "bound function exotic object" uniformly instead of sometimes "bound function" or "bound function object".

* Gives "array index" a definition instead of just making it italicized.

* Add requirement on caller of AllocateBasicObject per Allen's review

* Remove proto argument, and assert more things on callers

* AllocateBasicObject -> MakeBasicObject

Co-authored-by: Domenic Denicola <d@domenic.me>
Co-authored-by: Shu-yu Guo <syg@chromium.org>