Query parameters are not case sensitive only check for unknown ones

In Alpaca, see docs on Query parameters

Author: DanielVanNoord

ASCOM.Alpaca.Simulators/Controllers/BaseController.cs

@@ -48,7 +48,7 @@ internal bool BadRequestAlpacaProtocol(out BadRequestObjectResult Result)
                 }
             }
 
-            if (HttpContext.Request.Query.Keys.Any(key => !ValidAlpacaKeys.ValidParameterKeys.Contains(key)))
+            if (HttpContext.Request.Query.Keys.Any(key => !ValidAlpacaKeys.ValidParameterKeys.Contains(key.ToLower())))
             {
                 var keys = HttpContext.Request.Query.Keys.Where(key => !ValidAlpacaKeys.ValidParameterKeys.Contains(key));
                 Result = BadRequest(Strings.FormCapitalizationDescription + string.Join(", ", keys));

ASCOM.Alpaca.Simulators/Documentation/ValidAlpacaKeys.cs

@@ -5,13 +5,13 @@ namespace ASCOM.Alpaca.Simulators
     internal class ValidAlpacaKeys
     {
         internal static List<string> ValidParameterKeys = new List<string>{
-            "ClientID" ,
-            "ClientTransactionID",
-            "RightAscension",
-            "Declination",
-            "Id",
-            "SensorName",
-            "Axis"
+            "clientid" ,
+            "clienttransactionid",
+            "rightascension",
+            "declination",
+            "id",
+            "sensorname",
+            "axis"
         };
 
         internal static List<string> ValidFormKeys = new List<string> {