Add a cli/binary for the formatter

[80avin]

Is your feature request related to a problem? Please describe.
I want to use sqltools in neovim. Majority of the codebase is compatible, but some minor tweaks can make it easier to include it in neovim.

Describe the solution you'd like
Create a command line executable for the formatter package, and LSP.

Describe alternatives you've considered
I can create another package which uses this as library and create the expected executable there. I will do this for rest of the changes. However, considering the fact that formatter is already published to npm and adding a cli executable is a very minor effort, I think it will be better if it is added into this project itself.

Additional context
I can create the PR myself if the proposal sounds fair.