Align DataSourceStatus and DataStoreStatus ToString() methods with BigSegmentStoreStatus ToString()

The BigSegmentStoreStatus struct returns data in the format
(Available={0},Stale{1)} injecting the fields in allowing the type to be
easily stringified.

DataSourceStatus and DataStoreStatus only output a string of the
internal fields without labels, making decoding the results difficult
without understanding the datils of these types.

This change adds in the labeling of fields so they can be clearly
understood when using the default ToString() implementation.

BigSegmentStoreStatus has also been updated to include its type name
like the other two status providers. Now all follow the pattern
Type(Field=Value,Field2=Value...)

Author: HarleyRossetto

pkgs/sdk/server/src/Interfaces/BigSegmentStoreStatus.cs

@@ -40,6 +40,6 @@ public struct BigSegmentStoreStatus
 
         /// <inheritdoc/>
         public override string ToString() =>
-            string.Format("(Available={0},Stale={1})", Available, Stale);
+            string.Format("BigSegmentStoreStatus(Available={0},Stale={1})", Available, Stale);
     }
 }

pkgs/sdk/server/src/Interfaces/DataSourceStatus.cs

@@ -49,7 +49,7 @@ public struct DataSourceStatus
 
         /// <inheritdoc/>
         public override string ToString() =>
-            string.Format("DataSourceStatus({0},{1},{2})", State, StateSince, LastError);
+            string.Format("DataSourceStatus(State={0},StateSince={1},LastError{2})", State, StateSince, LastError);
 
         /// <summary>
         /// A description of an error condition that the data source encountered.
@@ -127,7 +127,7 @@ public override string ToString()
                 s.Append(Kind.Identifier());
                 if (StatusCode > 0 || !string.IsNullOrEmpty(Message))
                 {
-                    s.Append("(");
+                    s.Append('(');
                     if (StatusCode > 0)
                     {
                         s.Append(StatusCode);
@@ -136,13 +136,13 @@ public override string ToString()
                     {
                         if (StatusCode > 0)
                         {
-                            s.Append(",");
+                            s.Append(',');
                         }
                         s.Append(Message);
                     }
-                    s.Append(")");
+                    s.Append(')');
                 }
-                s.Append("@");
+                s.Append('@');
                 s.Append(Time);
                 return s.ToString();
             }

pkgs/sdk/server/src/Interfaces/DataStoreStatus.cs

@@ -29,6 +29,6 @@ public struct DataStoreStatus
 
         /// <inheritdoc/>
         public override string ToString() =>
-            string.Format("DataStoreStatus({0},{1})", Available, RefreshNeeded);
+            string.Format("DataStoreStatus(Available={0},RefreshNeeded={1})", Available, RefreshNeeded);
     }
 }