Update depencencies, update testing and remove legacy code form main

This PR updates testing and dependencies to the currently required level fro ioBroker adapters.

This PR updates main.js to satisfy linter standards

indentions and mixed space/tabs have been fixed to satisfy linter rules
a few single quotes have been changed to double quotes as this adapter has choosen to use double quote style
test scrips (using singel quotes) have been excluded from linter tests

Linter tests and general tests now pass Integration tests still fail with adapter already running. I will investigate the reason

This PR fixes duplicate class problem at main.js

adapter is written using class mode (class Notificationforandroidtv extends utils.Adapter {...}). Thats ok and current style.
BUT adapter also created a second adapter class by utils.adapter. This method is an alternative method for older legacy code not using classes. The existence of two classes collided.

So the following changes have been performed:

//const adapter = utils.adapter("notificationforandroidtv"); -> use this has been deactivated. Feel free to completly remove the line
all usages of adapter.xxx have been replace by this.xxx to reference and use the adapter class created

ALL tests now pass Please check functionality as the last fix changed your code and I do not have the hardware to verify functionality.

The following code sequences are suspect and possibly still erronous.

Line 576::

        const triggeredEvent = id.split(".", 4);
        const event = triggeredEvent.slice(-1);

        if (event == "payload")
        {

event is an array (slice retruns an array) which should not be compared with a string.

Line 666:

this.log.error(`Notify failed for :${ip}`, error.message);

is for sure erronous

Please check PR and merge.

DNAngelX / ioBroker.notificationforandroidtv