Add cloudflare tunnel endpoints

[ArturoGuerra]

Breaking changes

• Removes route dns endpoints as its not documented

  cloudflare-rs/cloudflare/src/endpoints/cfd_tunnel/route_dns.rs

  Lines 1 to 39 in f9664e3

  	use crate::framework::endpoint::{EndpointSpec, Method};
  	use super::RouteResult;
  	use serde::Serialize;
  	use uuid::Uuid;
  	/// Route for a Named Argo Tunnel
  	/// This creates a new route for the identified Tunnel. More than 1 route may co-exist for the same
  	/// Tunnel.
  	/// Note that this modifies only metadata on Cloudflare side to route traffic to the Tunnel, but
  	/// it is still up to the user to run the Tunnel to receive that traffic.
  	#[derive(Debug)]
  	pub struct RouteTunnel<'a> {
  	pub zone_tag: &'a str,
  	pub tunnel_id: Uuid,
  	pub params: Params<'a>,
  	}
  	impl<'a> EndpointSpec<RouteResult> for RouteTunnel<'a> {
  	fn method(&self) -> Method {
  	Method::PUT
  	}
  	fn path(&self) -> String {
  	format!("zones/{}/tunnels/{}/routes", self.zone_tag, self.tunnel_id)
  	}
  	#[inline]
  	fn body(&self) -> Option<String> {
  	let body = serde_json::to_string(&self.params).unwrap();
  	Some(body)
  	}
  	}
  	/// Params for routing a Named Argo Tunnel
  	#[derive(Serialize, Clone, Debug)]
  	#[serde(tag = "type", rename_all = "lowercase")]
  	pub enum Params<'a> {
  	Dns { user_hostname: &'a str },
  	Lb { lb_name: &'a str, lb_pool: &'a str },
  	}

Changes the following endpoints to align with the api spec

• List tunnels
• Create a Cloudflare Tunnel
• Delete a Cloudflare Tunnel
• Update a Cloudflare Tunnel
• Get a Cloudflare Tunnel

Features

Implements missing endpoints in cfd_tunnels

• List Cloudflare Tunnels
• Get Configuration
• Put Configuration
• Get cloudflare tunnel token

Closes #247

[kennetheversole]

Can you please rebase master? I recently just merged a large pr that restructures the code base

[GoncaloGarcia]

Your PR description seems to be wrong as its not deleting the Route DNS endpoint. Please update the description and don't delete that endpoint.