Add ft-flow to disabled rules

[JasonWeinzierl]

eslint-plugin-ft-flow seems to be the modern replacement for eslint-plugin-flowtype, which hasn't been upgraded in years.

When I pulled ft-flow into a recent PR to replace flowtype, I noticed that eslint-config-prettier doesn't disable its rules. I had to add them manually:

      // from eslint-config-prettier, but for ft-flow instead of flowtype
      'ft-flow/boolean-style': 'off',
      'ft-flow/delimiter-dangle': 'off',
      'ft-flow/generic-spacing': 'off',
      'ft-flow/object-type-curly-spacing': 'off',
      'ft-flow/object-type-delimiter': 'off',
      'ft-flow/quotes': 'off',
      'ft-flow/semi': 'off',
      'ft-flow/space-after-type-colon': 'off',
      'ft-flow/space-before-generic-bracket': 'off',
      'ft-flow/space-before-type-colon': 'off',
      'ft-flow/union-intersection-spacing': 'off',

Should these disables be added to this config?