Supply MSA bearer token directly

[SinanAkkoyun]

This PR enables one to supply the MSA bearer token directly (which simplifies a lot for users who do not want to rely on the cache system)

Dependent on: PrismarineJS/prismarine-auth#108

Enables:

const bot = mineflayer.createBot({
  ...
  auth: 'microsoft',
  msaToken: 'abcd...'
})

[SinanAkkoyun]

I just realized that the msa token goes invalid after a day or so, so this PR can be closed. I would, however, be very thankful for help on using the createBot session and access token parameters as I was not able to get that working

[SinanAkkoyun]

I implemented the auth flow for refreshing those tokens (Essential Mod auth flow) and would like to publish and use that code. For that, I would appreciate if this PR could be merged