Made input fields (name, description) mandatory while creating a new election, Added client/build in .gitignore

Description

Users won't be able to submit the new election form (modal) if they keep "name" or "description" field empty. Added bit of css for "Red border" on "name" and "description" input field if they are empty after clicking on Submit (Confirm) button for creating a new election. Styles for "Red border" are added inside "App.css" file.

Here is the UI images to describe my change,

I also included client/build inside .gitignore file.

Type of change

Please mark the options that are relevant.

• Updated UI/UX
• Improved the business logic of code
• Added new feature
• Other

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings