Add reminder plugin compatibility

[tu2-atmanand]

Along with the other plugins compatibility I can add another plugin called reminder for adding the due-date and time fields : https://github.com/uphy/obsidian-reminder

Another idea would, in the Edit Task Window, create a new checkbox field for alarm, if user clicks on this, then the date and time will be added in the markdown files in the following format, which is supported by the reminder plugin:

- [ ] This is a sample task with reminder (@2021-08-14)
- [ ] Also you can specify time (@2021-08-14 09:37)
- [x] You will not be notified about the reminders you have already checked. (@2021-08-14)

If the user does not click on the alarm icon, then the format will be as per the other plugin compatible format as selected by the user from the settings.

• When any task has a time set to it, and when it starts. There will be an indicator in the form of a small dot on the Ribbon Icon of the plugin.