Create a injectMethod() method

[mStirner]

Due to #460 a .bridge method cant be directly added to class.interface.js.
Doing so, would create a circular reference because the device item (or at leas the _id property) needs to be passed into the interface instances. (The _id i used to tell the connector on which device + interface a connection needs to be established).

It would be better to inject/add the .bridge method for the interface instance in the file class.devcie.js:

backend/components/devices/class.device.js

Line 50 in b8f5200

let iface = new Interface(obj, stream);

For that a injectMethod needs to be created, that add a property to the prototype of the given object.
(Which is absolutely the same as if the method was defined in the class body).

function injectMethod(obj, prop, value, options = {}){
    Object.defineProperty(Object.getPrototypeOf(obj), prop, {
        value,
        writable: true,
        enumerable: false,
        configurable: true,
        ...options
    });
}

This method could also be used in the system/component method definition:

backend/system/component/class.common.js

Lines 38 to 41 in b8f5200

	_defineMethod(name, executor) {
	Object.defineProperty(this, name, {
	value: (...args) => {

Instead of add a method to this, wrap it in the injectMethod method:

_defineMethod(name, executor) {
    injectMethod(this, name, (...args) => {
        ...
    });
});

• Create injectMethod() method
• Use injectMethod to define .bridge() method on interface instance (Refactor interface stream/socket handling #460)
• [ ] Wrap component _defineMethod() function definition in injectMethod()

[mStirner]

A test breaks when used for injecting the .bridge method into a interface instance.
Wihtout Object.getPrototype... it works. Otherwise only the last interface this method is used, create bridge requests.