addTypename flag should be false by default (#680)

[milosdanilov]

By following documentation --addTypename argument should be set to false by default

[zamiang]

Curious, any possible way to set addTypename to false given the existing command line argument options?

[milosdanilov]

@zamiang Nope. You can not pass a value to addTypename flag. It is just checked for presence of that particular flag.

[milosdanilov]

@martijnwalraven or @jbaxleyii please review this.

[jbaxleyiii]

@milosdanilov I think that addTypename should be true since its the default for Apollo Client. With Oclif, we should be able to add a negation ability to this flag via the flag config which we can document in the flag description.

From the oclif docs:

// flag with no value (-f, --force)
  force: flags.boolean({
    char: 'f',
    default: true,                // default value if flag not passed (can be a function that returns a boolean)
    // boolean flags may be reversed with `--no-` (in this case: `--no-force`).
    // The flag will be set to false if reversed. This functionality
    // is disabled by default, to enable it:
    // allowNo: true
  }),