Add/gitignore

[JiyaBatra]

Description

This PR resolves Issue #106 by implementing a light/dark theme toggle across the app.
Additionally, it adds a .gitignore file to ensure that node_modules and other unnecessary files are ignored by Git, keeping the repository clean.

Fixes #106

Type of change

New feature (non-breaking change which adds functionality)

Documentation update (added .gitignore)

How Has This Been Tested?

Verified that the light/dark theme toggle works on all pages/components.

Checked that committing/pushing no longer tracks node_modules or other ignored files.

Ran the app locally to ensure no warnings/errors are generated.

Checklist:

My code follows the style guidelines of this project

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

I have added tests that prove my fix is effective or that my feature works

New and existing unit tests pass locally with my changes

[vercel]

@JiyaBatra is attempting to deploy a commit to the Harsh Yadav's projects Team on Vercel.

A member of the Team first needs to authorize it.

[VinayKumar42]

@JiyaBatra Please close this PR. We cannot accept more commits
You have made 231 commits; we cannot accept this.

[HarshYadav152]

@JiyaBatra
Do these changes in another PR

1. Fork https://github.com/harshyadav152/savebook
2. clone your forked repo
3. add original repo as upstream by running the following command
   • git remote add upstream https://github.com/harshyadav152/savebook
4. create new branch with name of the feature you add or changes you made by using following command.
   • git checkout -b branch_name
5. make your changes in that branch.
6. stages changes by git add .
7. Commit changes by git commit -m "a_message"
8. Before pushing to remote run this command to avoid merge conflict git pull upstream main.
   • resolve any merge conflict occur.
9. push to your created branch by git push origin branch_name
10. Go to https://github.com/harshyadav152/savebook you will see and message here for creating a PR
11. Create PR with description or title and submit..

still have a doubt somewhere, you can reach out to us.

https://chat.whatsapp.com/I8GYXd3mHlDCC2iXhNGeqV

[JiyaBatra]

@JiyaBatra
Do these changes in another PR

1. Fork https://github.com/harshyadav152/savebook
2. clone your forked repo
3. add original repo as upstream by running the following command
   • git remote add upstream https://github.com/harshyadav152/savebook
4. create new branch with name of the feature you add or changes you made by using following command.
   • git checkout -b branch_name
5. make your changes in that branch.
6. stages changes by git add .
7. Commit changes by git commit -m "a_message"
8. Before pushing to remote run this command to avoid merge conflict git pull upstream main.
   • resolve any merge conflict occur.
9. push to your created branch by git push origin branch_name
10. Go to https://github.com/harshyadav152/savebook you will see and message here for creating a PR
11. Create PR with description or title and submit..

still have a doubt somewhere, you can reach out to us.

https://chat.whatsapp.com/I8GYXd3mHlDCC2iXhNGeqV

Okay I will try to do it by today.. And thank you for your guidance