issue "there is no logout button on index page. it is in login page so move that from login page to index page after login ! "

[roushanverma23]

Description

Added logout button after login page and firrebase authentication using google solved

Fixes: #774 #785

Type of change

• [ x] Bug fix (non-breaking change which fixes an issue)
• [ x] New feature (non-breaking change which adds functionality)
• [x ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ x] This change requires a documentation update

Checklist:

• [ x] I have made this from my own
• [ x] I have taken help from some online resources
• [ x] My code follows the style guidelines of this project
• [ x] I have performed a self-review of my own code
• [ x] I have commented my code, particularly in hard-to-understand areas
• [ x] I have made corresponding changes to the documentation
• [ x] My changes generate no new warnings

@huamanraj , @anuragverma108 please review

here is deploy link for testing: https://swagrv.netlify.app/

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Name	Status	Preview	Comments	Updated (UTC)
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[github-actions]

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