Sign out without presenting new controller

[tarasChernysh]

          hello, 
          can we logout user without presenting new controller? 
          Something like this: tap on button and logout without any redirection.

Originally posted by @tarasChernysh in #47 (comment)

[tarasChernysh]

I archived that making an API request using this params

struct OAuthSignOutRequest {
    let accessToken: String
    let refreshToken: String
    let clientId: String
    let endSessionURL: URL
    
    var urlRequest: URLRequest {
        let headers = [
            "Authorization": "Bearer \(self.accessToken)",
            "Content-Type": "application/x-www-form-urlencoded"
        ]
        var components = URLComponents()
        components.queryItems = [
            .init(name: "client_id", value: self.clientId),
            .init(name: "refresh_token", value: self.refreshToken)
        ]

        var request = URLRequest(url: self.endSessionURL)
        headers.forEach {
            request.setValue($0.value, forHTTPHeaderField: $0.key)
        }
        request.httpMethod = "POST"
        request.httpBody = components.query?.data(using: .utf8)
        return request
    }
}