Add Timestamp type to cassandra column types and wrap Timestamp value inside single quotes when creating queries (#1163)

src/Explorer/Panes/Tables/Validators/EntityTableHelper.tsx

@@ -33,6 +33,7 @@ const {
   Inet,
   Smallint,
   Tinyint,
+  Timestamp,
 } = TableConstants.CassandraType;
 export const cassandraOptions = [
   { key: Text, text: Text },
@@ -50,6 +51,7 @@ export const cassandraOptions = [
   { key: Inet, text: Inet },
   { key: Smallint, text: Smallint },
   { key: Tinyint, text: Tinyint },
+  { key: Timestamp, text: Timestamp },
 ];
 
 export const imageProps: IImageProps = {