[Feature Request] make the underlying http.Client replaceable

[ricklxm]

Is your feature request related to a problem? Please describe.
In my scenario, I need to replace the underlying http.Client used by the sdk with my company customized http.Client (for emitting mertics, using our company's http mesh, etc).

Describe the solution you'd like
There is a similar feature in aws's sdk here:

// WithHTTPClient sets a config HTTPClient value returning a Config pointer
// for chaining.
func (c *Config) WithHTTPClient(client *http.Client) *Config {
	c.HTTPClient = client
	return c
}

Describe alternatives you've considered
NA

Additional context
NA

[wdawg33]

Hi @ricklxm ! Thank you for reaching out to us with your request. We will review as a team this week and reach back to you.