Fixes useless app related errors

[MatthewWaanders]

Fixes errors related to:

homey module not being found by require, these were thrown twice per Homey include as import/no-unresolved and node/no-missing-require both indicating that the module wasn't found in node_modules.

Bitwise operations reporting as errors which cause a lot of errors for 433/Z-Wave/Zigbee applications where bitmasks and bit operations are often necessary.

Enforces ecmaScript 2018 unless defined otherwise in .eslintrc.json, as otherwise eslint won't run with parsing error: invalid ecmaVersion.