TUN-8281: Run cloudflared query list tunnels/routes endpoint in a paginated way

Before this commit the commands that listed tunnels and tunnel routes would be limited to 1000 results by the server.

Now, the commands will call the endpoints until the result set is exhausted. This can take a long time if there are
thousands of pages available, since each request is executed synchronously.
From a user's perspective, nothing changes.

cfapi/tunnel_test.go

@@ -3,7 +3,6 @@ package cfapi
 import (
 	"bytes"
 	"fmt"
-	"io"
 	"net"
 	"reflect"
 	"strings"
@@ -16,52 +15,6 @@ import (
 
 var loc, _ = time.LoadLocation("UTC")
 
-func Test_parseListTunnels(t *testing.T) {
-	type args struct {
-		body string
-	}
-	tests := []struct {
-		name    string
-		args    args
-		want    []*Tunnel
-		wantErr bool
-	}{
-		{
-			name: "empty list",
-			args: args{body: `{"success": true, "result": []}`},
-			want: []*Tunnel{},
-		},
-		{
-			name:    "success is false",
-			args:    args{body: `{"success": false, "result": []}`},
-			wantErr: true,
-		},
-		{
-			name:    "errors are present",
-			args:    args{body: `{"errors": [{"code": 1003, "message":"An A, AAAA or CNAME record already exists with that host"}], "result": []}`},
-			wantErr: true,
-		},
-		{
-			name:    "invalid response",
-			args:    args{body: `abc`},
-			wantErr: true,
-		},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			body := io.NopCloser(bytes.NewReader([]byte(tt.args.body)))
-			got, err := parseListTunnels(body)
-			if (err != nil) != tt.wantErr {
-				t.Errorf("parseListTunnels() error = %v, wantErr %v", err, tt.wantErr)
-				return
-			}
-			if !reflect.DeepEqual(got, tt.want) {
-				t.Errorf("parseListTunnels() = %v, want %v", got, tt.want)
-			}
-		})
-	}
-}
-
 func Test_unmarshalTunnel(t *testing.T) {
 	type args struct {
 		body string