Migrate TSLint to ESLint

[artalat]

Since TSLint is being migrated in favor of ESLint, the sooner we make the switch the better.

Useful Links:

• https://github.com/typescript-eslint/tslint-to-eslint-config
• https://dev.to/cosmvs/tslint-eslint-cra-typescript-prettier-2h40

[taha437]

@artalat can you please elaborate more on the scope and scheme of migration. I have read both the documents attached in this issue and the instructions seem pretty straight forward. Should I just simply follow this documentation or there is a different approach. And also are the changes to be made solely on this repository or others as well.

[artalat]

starting from this repo, changes will be applied everywhere.

it is straight forward, but theres a catch. Not all rules are migrated with the script. specifically, react jsx rules. those you will have to migrate manually.

[artalat]

why is this marked as done? This is infact blocking a few other issues