Allow to disable PageView event per default for tiktok and facebook pixel

[redasalmi]

Is your feature request related to a problem? Please describe.
Is there any particular reason to trigger the window.fbq('track', 'PageView') event inside of the trackTikTokPixel function ?

gatsby-plugin-gdpr-cookies/src/services/tiktok.js

Lines 35 to 44 in 02ce0e6

	exports.trackTikTokPixel = (options) => {
	if (
	getCookie(options.cookieName) === `true` &&
	validTikTokPixelId(options) &&
	typeof window.fbq === "function"
	) {
	window.fbq(`track`, `PageView`)
	window.ttq.page()
	}
	}

Describe the solution you'd like
It would be really helpful to have a way to opt out of the PageView event for the tiktok tracker or in general, like a pageViewDisable bool field inside of gatsby-config.js for the facebookPixel and tikTokPixel objects.

Additional context
My problem is that I wanted to add the eventID param to the PageView event for facebook pixel, after adding it manually (I had to opt out of the gatsby-gdpr-facebook-pixel and install fbevent.js manually because there is no way of doing it with this package), I got a warning that the event is getting duplicated and found out it was getting triggered by the trackTikTokPixel.