Add JSDoc to the core of manifest

[SebConejo]

Add JSDoc comments to all functions and methods in the core of manifest to improve code clarity and maintainability.

Check Js doc tutorial here: https://wojciechkrysiak.medium.com/typescript-jsdoc-better-docs-7c03b6ea04df

[TheMarvelFan]

Hi,

Is anyone working on this issue? If not, I would like to take it up.

Thanks

[Sauhard74]

@SebConejo hey can i work on this issue?

[brunobuddy]

Closing as not critical