Make as-bind Assembly Script Entry file a CLI option

[torch2424]

As mentioned by @jtenner on the slack:

you can instruct users to set as-bind as an entry point so they don't have to explicitly export * from "as-bind"

Put it in the cli options

This is how as2d does it

[jtenner]

asc entryfile.ts entryfile.ts ...cli options

[jtenner]

Would you like me to submit a pull request tomorrow?

[torch2424]

@jtenner Thanks for the explanation! 😄

And I'll go ahead and fix it in a little bit, as I want to launch the library tommorrow 👍 😄 Thank you for the offer though!