CryptoExchange V12 (#281)

* Result types:
  * (Web)CallResult types are replaced by HttpResult, WebSocketResult and QueryResult with the same logic
  * Updated result types to record type
  * Result creation can be done with (Http/WebSocket/Query)Result.Ok(..) and .Fail(..)
  * Removed implicit result type conversion to bool, `if (result)` no longer works, instead use `if (result.Success)`
  * Replaced CallResult.SuccessResult with CallResult.Ok()
  * Fixed result object nullability hinting, for example Data might be null if Success isn't checked for true

* Parameters & serialization:
  * Added support for `enabled` and `disabled` strings to bool converter
  * Removed ParameterCollection type, has been replaced by Parameters type
  * Removed ArraySerialization, OrderParameters and ParameterOrderComparer properties from RestApiClient, moved to ParameterSerializationsSettings
  * Updated RestRequestConfiguration in AuthenticationProvider.ProcessRequest to contain the full RequestDefinition instead of copied fields	

* Clients:
  * Updated Api client constructor logging parameter from ILogger to ILoggerFactory? 
  * Added Api client constructor exchange name parameter
  * Added ToString overrides on base API types
  * Added Exchange property on BaseApiClient
  * Added ApiCredentials property on IRestApiClient and ISocketApiClient interfaces
  * Updated ILogger source from client name to topic specific client name
  * Removed logging from client creation
  * Fixed BaseRestClient SetApiCredentials not marked as virtual

* Rest:
  * Added BaseAddress to RequestDefinition object
  * Updated RestApiClient AuthenticationProvider logic from private to protected and virtual
  * Removed RestApiClient.SendAsync baseAddress parameter removed
  * Removed RestApiClient.SendAsync without type parameter

* WebSocket:
  * Updated MessageRouting definition into CreateForEvent for subscriptions and CreateForQuery for queries
  * Improved Query type safety with CeateForQuery which allows second parameter for specifying the result type
  * Renamed MessageRouter.CreateWithoutHandler to CreateVoid
  * Updated SocketApiClient.GetSocketConnection to check connection uri instead of Tag for finding compatible connections
  * Removed unused UnhandledMessageExpected property SocketApiClient
  * Fixed issue in SocketApiClient.GetSocketConnection causing requests to always wait the full max 10 seconds when there was a reconnecting socket
	
* Shared APIs:
  * Updated Option definitions to always require the exchange name as first parameter
  * Added missing dedicated option types
  * Added Discover method on ISharedClient interface, returning info on supported capabilities and operations
  * Added SharedRequest GetParamValue helper method accepting multiple parameter names
  * Added ResetStaticExchangeParameters method on ExchangeParameters
  * Added Status property to SharedWithdrawal model
  * Added TradingModes property to SharedBalance model
  * Updated ExchangeSymbolCache to support multiple environments and additional key separation
  * Updated Shared ExchangeParameters parameter names to be case insensitive
  * Updated code comments
  * Replaced ExchangeResult with ExchangeCallResult type
  * Removed AsExchangeResult/ExchangeWebResult
  * Removed TradingMode from the response model, only maintained on models where it makes sense
  * Removed IListenKey support, listen keys now rely on internal management with TokenManager

* Rate limiting:
  * Fixed websocket connection attempts counting towards rate limit even when server could not be reached
  * Removed host from rate limit methods, now part of the already provided RequestDefinition
  * Added amount parameter to RateLimit Reset method to allow partially resetting the limit

* Added TokenManager implementation for automatic listenkey/token management
* Added UserClientProvider base class
* Added async streaming on UserDataTracker items with StreamUpdatesAsync
* Added cancellation token support to UserDataTracker starting
* Added Unit type for non-result types
* Added ServerError constructor taking ErrorType and message to make it easier to create
* Added SupportedEnvironments property to PlatformInfo
* Updated SymbolOrderBook DoResyncAsync to return CallResult instead of CallResult<bool> which was redundant
* Various small performance improvements

CryptoExchange.Net/Objects/RequestDefinition.cs

@@ -9,9 +9,14 @@ namespace CryptoExchange.Net.Objects
     public class RequestDefinition
     {
         private string? _stringRep;
+        private string? _fullUrl;
 
         // Basics
 
+        /// <summary>
+        /// Base address of the request
+        /// </summary>
+        public string BaseAddress { get; set; }
         /// <summary>
         /// Path of the request
         /// </summary>
@@ -77,13 +82,31 @@ namespace CryptoExchange.Net.Objects
         /// </summary>
         public bool? ForcePathEndWithSlash { get; set; }
 
+        /// <summary>
+        /// Full url, host + path
+        /// </summary>
+        public string FullUrl
+        {
+            get
+            {
+                if (_fullUrl != null) 
+                    return _fullUrl;
+
+                var result = BaseAddress.AppendPath(Path);
+                if (ForcePathEndWithSlash == true && !result.EndsWith("/"))
+                    result += "/";
+
+                _fullUrl = result;
+                return _fullUrl;
+            }   
+        }
+
         /// <summary>
         /// ctor
         /// </summary>
-        /// <param name="path"></param>
-        /// <param name="method"></param>
-        public RequestDefinition(string path, HttpMethod method)
+        public RequestDefinition(string baseAddress, string path, HttpMethod method)
         {
+            BaseAddress = baseAddress;
             Path = path;
             Method = method;