add folder operation and use createQueryRunner

src/alumno/student.controller.ts

@@ -27,17 +27,7 @@ export class StudentController {
   }
 
   @Get(':id')
-  findOne(@Param('id') id: string) {
+  findOne(@Param('id') id: number) {
     return this.studentService.findOne(+id);
   }
-
-  @Patch(':id')
-  update(@Param('id') id: string, @Body() updateStudentDto: UpdateStudentDto) {
-    return this.studentService.update(+id, updateStudentDto);
-  }
-
-  @Delete(':id')
-  remove(@Param('id') id: string) {
-    return this.studentService.remove(+id);
-  }
 }