docs: signals in Oryx

[dunqan]

Documentation of signals in Oryx.

closes HRZ-2767

[VadymSachenko]

In general, avoid future tenses as much as possible. Also, this sentence looks unclear, so consider rephrasing or splitting it into two smaller ones: "In the preceding example, the logProductCode effect automatically starts when MyComponent is connected to the DOM, logging the product code every time, and the $product signal updates."

Suggested change

In the above example, the `logProductCode` effect will automatically start when `MyComponent` is connected to the DOM, logging the product code everytime $product signal will update. Once the component is disconnected from the DOM, the effect will automatically stop. This directive simplifies effect management by automatically linking them to component lifecycles, making your component code cleaner and easier to manage.

In the above example, the `logProductCode` effect starts automatically when `MyComponent` is connected to the DOM, logging the product code every time the $product signal updates. Once the component is disconnected from the DOM, the effect automatically stops. This directive simplifies effect management by automatically linking them to component lifecycles, making your component code cleaner and easier to manage.

[dunqan]

improved

[andriitserkovnyi]

gives control over when a signal updates Please clarify the meaning of this or update this sentence to improve clarity

[tobi-or-not-tobi]

I've updated the docs with a slightly different intro to the signal topic and a small tweak in the text above.