Adding package-lock.json to .gitignore

[Nishitbaria]

Related Issue

Closes #1252

Description:

This pull request adds package-lock.json to the .gitignore file to prevent accidental commits of the package-lock.json file. The package-lock.json file is automatically generated by npm when installing or updating packages and includes specific versions and dependencies of packages used in the project. It's not necessary to include this file in version control because it can be generated automatically based on the information in the package.json file.

Benefits:

1. Avoid Unintended Changes: Excluding package-lock.json from version control helps prevent accidental changes to this file. In some cases, changes to this file could lead to inconsistencies in dependencies among team members.

2. Cleaner Commit History: By ignoring package-lock.json, our commit history will focus on the meaningful changes to our codebase instead of tracking changes to the generated dependency lockfile.

3. Smoother Collaboration: Since package-lock.json is automatically generated, including it in version control could lead to merge conflicts when different team members update packages. Ignoring it helps avoid unnecessary conflicts.

   Checklist

• [ ] My code adheres to the established style guidelines of the project.
• [ ] I have included comments in areas that may be difficult to understand.
• [ ] My changes have not introduced any new warnings.
• [ ] I have conducted a self-review of my code.

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[Nishitbaria]

@crocmons @rohansx please review and merge my pull request