feat(GuildChannelManager): allow editing flags

[almeidx]

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

• Add flags to Guild Channel parameters in Modify Channel discord/discord-api-docs#5469

Status and versioning classification:

• I know how to update typings and have done so, or typings don't need updating

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Name	Status	Preview	Updated
discord-js	✅ Ready (Inspect)	Visit Preview	Sep 21, 2022 at 9:57PM (UTC)

[codecov]

Codecov Report

Merging #8637 (7fa79ff) into main (30ceaf7) will increase coverage by 26.03%.
The diff coverage is n/a.

❗ Current head 7fa79ff differs from pull request most recent head 421250c. Consider uploading reports for the commit 421250c to get more accurate results

@@             Coverage Diff             @@
##             main    #8637       +/-   ##
===========================================
+ Coverage   60.47%   86.50%   +26.03%     
===========================================
  Files          12       87       +75     
  Lines        1513     8672     +7159     
  Branches       87     1110     +1023     
===========================================
+ Hits          915     7502     +6587     
- Misses        597     1128      +531     
- Partials        1       42       +41     

Flag	Coverage Δ
builders	100.00% <ø> (?)
collection	100.00% <ø> (?)
proxy	74.10% <ø> (?)
rest	91.99% <ø> (?)
utilities	100.00% <ø> (?)
voice	63.86% <ø> (?)
ws	60.47% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...ders/src/components/selectMenu/SelectMenuOption.ts	100.00% <0.00%> (ø)
...ges/builders/src/components/textInput/TextInput.ts	100.00% <0.00%> (ø)
packages/builders/src/components/Assertions.ts	100.00% <0.00%> (ø)
...ApplicationCommandNumericOptionMinMaxValueMixin.ts	100.00% <0.00%> (ø)
...ers/src/interactions/slashCommands/options/role.ts	100.00% <0.00%> (ø)
packages/builders/src/util/validation.ts	100.00% <0.00%> (ø)
packages/builders/src/interactions/modals/Modal.ts	100.00% <0.00%> (ø)
packages/rest/src/lib/REST.ts	98.87% <0.00%> (ø)
packages/voice/src/audio/AudioPlayer.ts	80.95% <0.00%> (ø)
packages/rest/src/lib/errors/HTTPError.ts	100.00% <0.00%> (ø)
... and 65 more

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