Support macOS 15+ text formatting

[Nicell]

Adds support for basic text formatting (bold, italic, underline, strikethrough)

Pairs with BlueBubblesApp/bluebubbles-helper#50

This script:

const body = {
  chatGuid,
  message: "Bold Italic Underline Strike",
  method: "private-api",
  textFormatting: [
    { start: 0, length: 4, styles: ["bold"] },
    { start: 5, length: 6, styles: ["italic"] },
    { start: 12, length: 9, styles: ["underline"] },
    { start: 22, length: 6, styles: ["strikethrough"] }
  ]
};

fetch(`${baseUrl}/api/v1/message/text?password=${encodeURIComponent(password)}`, {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify(body)
})

Resulted in:

[zlshames]

Overall, this looks great! Thanks for doing all of the validation, min MacOS version, and what not, not only the endpoint & calls to the PAPI. Check out my comment, but that's the only comment I have. Obviously, this will need to be paired with a release for the PAPI bundle.

[kate-jiang]

this and #768 are huge for my use case !! great work boys

[arimendelow]

@zlshames, looking for an update on this — would be an incredible unlock to have this :)

[zlshames]

@zlshames, looking for an update on this — would be an incredible unlock to have this :)

almost done with my rewrite. I'm creating a plan to add this to the client side once i finish ironing out the rewrite. Don't worry, i haven't forgotten. Just have some loose ends to clean up before getting to it.