Add ARIA attributes to login form

[Avinash905]

Description
ARIA attributes are crucial for enhancing web application accessibility, benefiting users with disabilities. Currently, our forms lack these attributes, hindering proper interpretation by assistive technologies.

Some steps to implement this enhancement-

• Identify the login form elements in your codebase.
• Determine the relevant ARIA attributes to add for each form element.
• Add ARIA roles to the forms and their elements (e.g., "form" role for the main form element).
• Include concise and descriptive ARIA labels using the aria-label attribute.
• Use the aria-describedby attribute to provide additional instructions for the forms.
• Implement ARIA states and properties (e.g., aria-required for required fields).
• Test the accessibility improvements using assistive technologies.

[Avinash905]

Please assign me this issue so that I can work on this issue under GSSOC'23.