Add better headers

[amirinsight]

Currently this package is using super simple headers for it's requests. I need to add better headers.

The location of this constant is in the following link:

py-bingx/bingx/api.py

Lines 17 to 18 in 9b2942c

	self.HEADERS = {'User-Agent': 'Mozilla/5.0',
	'X-BX-APIKEY': self.API_KEY}

[franciszek-szeptycki]

Hi, I would be happy to take on this task, but please be more specific.... what does better headers mean?

[amirinsight]

I'm looking for multiple common user agents (To be chosen randomly from). You can also check the headers which the browser sends in this request.