Support audit log reasons for pinning and unpinning messages

[cherryblossom000]

Which package is the feature request for?

discord.js

Feature

Add a reason: string parameter for Message(Manager)#(un)pin. #4869 removed support for including an audit log reason when pinning and unpinning messages, citing that it isn’t supported, but from my testing it is.

X-Audit-Log-Reason is supported for pinning messages and the reason appears in the client. For unpinning messages, the reason doesn’t appear in the client but is returned by the API in /guilds/{guild.id}/audit-logs.

Ideal solution or implementation

Add a reason: string parameter for Message(Manager)#(un)pin.

Alternative solutions or implementations

No response

Other context

Related: #4359