Introduce TypeScript

[magul]

It occurs, that TypeScript introduction would benefit us in many ways.

It should increase the maintainability of the code, guarding us before type mismatch errors and so on...

Read also:

• https://stackoverflow.com/a/35048303
• https://medium.com/@jtomaszewski/why-typescript-is-the-best-way-to-write-front-end-in-2019-feb855f9b164
• https://www.merixstudio.com/blog/why-use-typescript/?utm_source

[magul]

@Rafalkufel @Maciek246 @agatakozinska what do you think about it? It can probably be done gradually, meaning that code can be split and typified in chunks.

[Maciek246]

I'm absolutely for this idea. TypeScript will allow us to avoid a lot of errors in the development phase and make Alinka more stable. Of course, it requires work with rewriting React components and Electron backend + probably installing packages with types but still, usage TypeScript has more advantages than disadvantages.