Generate typescript declaration files

[Reagankm]

When I tried using AnimatedEllipsis in my project, I got the following warning:

Could not find a declaration file for module 'rn-animated-ellipsis'. '/.../node_modules/rn-animated-ellipsis/index.js' implicitly has an 'any' type.   Try npm i --save-dev @types/rn-animated-ellipsis if it exists or add a new declaration (.d.ts) file containing declare module 'rn-animated-ellipsis';

So I followed Typescript's instructions to generate this .d.ts file, which involved adding Typescript, creating a tsconfig.json, and running npx tsc.

I verified it locally with yarn add file:[path/to/folderLocation] to use this version of rn-animated-ellipsis in my project.

[Reagankm]

@Thanhal-P-A How does this look to you? It's been working in my project for the last year

[Reagankm]

@Thanhal-P-A
Checking to see if this can be approved and committed