Library refresh

[slavikdenis]

Hi :)

I've fixed some problems I've faced while using this library:

• resolving promises in the native module on early returns (if you are awaiting them, they are endless)
• preventing crashes on other platforms (if using the hook, iOS fails of course --> return false on other platforms for the methods)
• replace !! operator with ? safe call operator (see Kotlin docs - Null safety)

While working on these changes, I updated some other things that I came across:

• updating .gitignore (after opening the project, a bunch of new files popped up, updated accordingly to https://github.com/github/gitignore/blob/main/Android.gitignore)
• updating README (fixing yarn install, mentioning minSdkVersion [preventing issues like Compilation error about minSdkVersion #11 ], adding a warning about other platforms)
• fixing development scripts (running yarn lint on the pre-commit hook for .js,.ts files, adding missing yarn lint:ts which was included in the pre-commit hook already, running yarn lint:ts only for .ts files
• correcting tsconfig.json to skip library check (failing on some node_module declaration files, if false)

Thank you for your time and let me know if any changes are needed.

[slavikdenis]

Hi @Gretzky :) Do you think you could take a look at this?