Add youtube tracker remover

[Nam0]

Adding Regex "youtube": /(https://youtu.be/\w+)?.+/g to remove Youtube SI tracking information.
Added this.defaultSettings.youtube = true; for the setting to be enabled by default

			//youtube
			
			//example of youtube link
			// https://youtu.be/sXtryATp7dU?si=-b3JJeQMHAMx4TBa
			if (this.settings.youtube) {
			if (msgcontent.includes("https://youtu.be")) {
				msgcontent = this.sanitizeUrls(msgcontent, REGEX.youtube);

				if (this.settings.showToasts && !isFromSomeoneEsle) {
					Toasts.success("Successfully removed tracker from YouTube link!");
				}
			}

[wotanut]

I know this is old, sorry for the slow response, i'll check this pr shortly and merge it over the weekend