migration: Migrate to Typescript.

[nikhilmaske-2001]

Fixes #20.
Renamed all files with extension .tsx.

Testing plan: Everything works fine after this changes.

[boxdox]

Hook should end in .ts since they are not returning any jsx. Also, types are needed first, not just changing the file extension.

[nikhilmaske-2001]

@boxdox Almost all functions are returning the jsx element, can you please check it again?
Yes, I am working on adding types.

[boxdox]

i am talking about src/index.js, that's a plain hook, no jsx returned. also, i am curious what does this project offer, when there are alternatives available?

[Gautam-Arora24]

@boxdox Currently the library is bare-bone, and I have few ideas that can be implemented in the library -->

• Measure dimensions of lazy-loaded elements.
• Add testing support to the library.

If you have any ideas that can make this library stand out from others, feel free to post them in this issue. Thanks 🙂