Add TSlint

[nerder]

Description

I add the TSlint to the project and create couple of task in order to use the linter from the CLI.

Fixes #15

Type of change

Please delete options that are not relevant.

• [x] New feature (non-breaking change which adds functionality)
• [ ] This change requires a documentation update

How Has This Been Tested?

run npm run lint and check if there are errors or running npm run lint:fix to fix the autofixable

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [ ] I have made corresponding changes to the documentation

[ghost]

we should add precommit hooks directly!

[oscard0m]

Let's create an issue for the hooks @juanchaur ! 💪

[juanchaur]

issue created: https://github.com/dominguezcelada/rent-flat-scraper/issues/32