Updated the toast notification

[dikshashukla455]

Issue Number

fixes #201

Describe the changes you've made

I have added an error message which will be displayed along with an icon in the toast notification.

Describe if there is any unusual behavior (Any Warning) of your code(Write NA if there isn't)

NA

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• [] I have updated the documentation accordingly.
• All new and existing tests passed.
• The title of my pull request is a short description of the requested changes.

[codetheorem]

I think it is better to show error message that backend sends rather than showing same error message for every action. We can update backend if it is showing the blank message.

[cyntss]

I agree with @codetheorem

[dikshashukla455]

Yeah, you are right. I don't know the backend part that's why I implemented in front end only.but I will try to work on this implementation in backend.
Thank you.

[dikshashukla455]

Yeah, you are right. I don't know the backend part that's why I implemented in front end only.but I will try to work on this implementation in backend. Thank you.

@codetheorem you can also try on it. I mean my issue is open. Everyone can work on it