Use pincode validator to check for valid pincodes

[Somnath-Chattaraj]

Used a npm package to check for valid pincode

• also solves issue Want to correct the PIN validation in register form  #158

Images for reference

• image with incorrect pincode

• image with correct pincode. Also console log the pincode details

@Luson045 Hopes you find it helpful. Please give it a level Hacktoberfest-accepted

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[Somnath-Chattaraj]

@Luson045 do i need to do anything else?

[Luson045]

@Somnath-Chattaraj you weren't assigned this issue... have you read the announcements?

[Somnath-Chattaraj]

@Luson045 since it was a long time the assignee has not reponsed with any pr so I did it. A request, please accept this pr or give it a label, since my first pr #63 which i coauthored has not been detched as a pull request in hacktoberfest. Hope you will understand

[Luson045]

@hmm okay merge the conflixts

[Somnath-Chattaraj]

@Luson045 done

[Somnath-Chattaraj]

@Luson045 you merge it as it also check for valid pincodes which is not done in pr #184