feat(RateLimits): optionally error on ratelimits

[ckohen]

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

Ported from https://github.com/discordjs/discord.js/pull/5659

Needs #51

Status and versioning classification:

• Code changes have been tested against the Discord API, or there are no code changes
• I know how to update typings and have done so, or typings don't need updating
• This PR changes the library's interface (methods or parameters added)

[codecov[bot]]

Codecov Report

Merging #77 (c190f00) into main (46c9183) will increase coverage by 0.02%. The diff coverage is 89.74%.

@@            Coverage Diff             @@
##             main      #77      +/-   ##
==========================================
+ Coverage   88.83%   88.86%   +0.02%     
==========================================
  Files           8        9       +1     
  Lines        1344     1455     +111     
  Branches      142      152      +10     
==========================================
+ Hits         1194     1293      +99     
- Misses          9       12       +3     
- Partials      141      150       +9     

Impacted Files	Coverage Δ
...ackages/rest/src/lib/handlers/SequentialHandler.ts	82.44% <80.00%> (-0.48%)	:arrow_down:
packages/rest/src/lib/errors/RateLimitError.ts	93.33% <93.33%> (ø)
packages/rest/src/lib/REST.ts	96.46% <100.00%> (+0.28%)	:arrow_up:
packages/rest/src/lib/RequestManager.ts	94.20% <100.00%> (+0.31%)	:arrow_up:
packages/rest/src/lib/utils/constants.ts	100.00% <100.00%> (ø)

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[ckohen]

Not really sure why CI is failing (cache is set to npm when we're using yarn though, so maybe that's it?)

[iCrawl]

That might just be my fault, yes 😆 Will fix and then request a rebase.