feat: replace old portfolio

[120EE0692]

Your checklist for this pull request

🚨Please review the guidelines for contributing to this repository.

• Make sure you are requesting to pull a topic/feature/bugfix branch (right side). Don't request your default branch!
• Make sure you are making a pull request against the default branch (left side). Also you should start your branch off default branch.
• Check the commit's or even all commits' message styles matches our requested structure.
• Check your code additions will fail neither code linting checks nor unit test.
• I have added necessary documentation (if appropriate)

Description

Activate the user old portfolio page in new website

❤️Thank you!

Post merge checklist

• Follow steps from the guidelines for contributing to this repository.
• If you are a new contributor, ping in the thread and one of the maintainers will add you to all-contributors list.

[rutajdash]

Ensure the following:

1. If someone opens a profile page which is /portfolio/<newUserId>, redirect it to /portfolio/<newUserId>/<generatedUserName
2. If someone opens a profile page which is /portfolio/<newUserId>/<invalidUserName>, redirect it to /portfolio/<newUserId>/<generatedUserName
3. The generatedUserName must be <firstName>_<lastName>
4. If anyone opens /portfolio/<oldUserName>, redirect it to /portfolio/<newUserId>/<generatedUserName
5. If anyone has an Email Id as transfer-<something>@gmail.com, do not show any email ID.
6. Use revalidate set to once a week.

[rutajdash]

@120EE0692 Tag me and let me know once the following is done.

Ensure the following:

1. If someone opens a profile page which is /portfolio/<newUserId>, redirect it to /portfolio/<newUserId>/<generatedUserName
2. If someone opens a profile page which is /portfolio/<newUserId>/<invalidUserName>, redirect it to /portfolio/<newUserId>/<generatedUserName
3. The generatedUserName must be <firstName>_<lastName>
4. If anyone opens /portfolio/<oldUserName>, redirect it to /portfolio/<newUserId>/<generatedUserName
5. If anyone has an Email Id as transfer-<something>@gmail.com, do not show any email ID.

[rutajdash]

@120EE0692 please complete the mentioned tasks.

[rutajdash]

1. User slug check logic is inefficient.
2. Unnecessary details in getUserByOldUserName