feat: change CSV dataset file format structure

Change the CSV dataset file format structure from one
column which is 'text' column to three columns structure
which are 'system', 'prompt' and 'response' columns.

src/services/export/CSV_Format.ts

@@ -8,16 +8,15 @@ function CSV_Formater({
   answer,
 }: InstructionBase): string {
   return (
-    `"${systemMessage ? sanitizer(systemMessage) + ". " : ""}` +
-    `### Prompt: ${sanitizer(question)}. ` +
-    `### Response: ${sanitizer(answer)}." \n`
+    `"${systemMessage ? sanitizer(systemMessage) : ""}",` +
+    `"${sanitizer(question)}","${sanitizer(answer)}"\n`
   );
 }
 
 const QAFormat: DatasetFormat = {
   formater: CSV_Formater,
   decorators: {
-    first: "text\n",
+    first: "system,prompt,response\n",
   },
 };