fix(Collector): docs and types

[vaporoxx]

Please describe the changes this PR makes and why it should be merged:

This PR is smaller than it sounds but I'm explaining every change in detail here because I don't want to open yet another fix PR lol

Docs:

• The return type of MessageComponentInteractionCollector#collect() was changed from ?(Snowflake|string) to just ?Snowflake because it only returns either null or the interaction ID
• The return type of ReactionCollector#collect() was changed from Promise<Snowflake|string> to Promise<?(Snowflake|string)> because it can return null as well
• The return type of Collector#collect() was changed from... whatever that was before to ?(*|Promise<?*>) so that extended classes can specify whether it returns a promise or not

Types:

• Collector got another type parameter for additional filter parameters
• Collector#collect() can now return a promise, which should be specified on extended classes as explained above
• All collect() and dispose() methods got null added to their return type (probably an oversight)
• A user parameter was added to ReactionCollector#collect() (probably another oversight)

Miscellaneous:

• An await keyword was added in Collector#handleCollect() because this.collect() is asynchronous for reaction collectors

Status and versioning classification:

• I know how to update typings and have done so

[monbrey]

#5936 might impact this, at least in regards to the MessageComponentInteractionCollector (which no longer exists)