Code splitting

[akshay1027]

Related Issue

Implemented code splitting and improved application s performance from 29 to 62 and accessibility from 86 to 100 ( in google dev tools performance metric)

Closes: #189

Describe the changes you've made

Since the home takes a 100vh, we can take some more time to load the footer in home and other routes, so implemented lazy loading! Also made the 404 page lazy-loaded

What sort of change have you made:

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [x] Enhancement in the existing features
• [ ] Other

Mention any unusual behaviour of your code (Write NA if not)

Any unusual behaviour of your code

Checklist:

• [x] My code follows the guidelines of this project.
• [x] I have performed a self-review of my own code.
• [x] I have commented my code, particularly whereever it was hard to understand.
• [x] My changes generate no new warnings.
• [x] I have verified/tested my code by running it locally.

Additional Info (optional)

Any additional information you want to give

[akshay1027]

before code splitting:

after code splitting:

[akshay1027]

@Namanl2001 please let me know about the changes!