Allow reading whether the task is running

[Vectorial1024]

Need to check with the Laravel docs, but the idea is that task creators can check whether the tasks are running, and when the task is no longer running, the creator can invoke its custom logic (implemented by themselves) to check whether the task was successful.

With this, we can also have a convenient "polling" function that waits until the task stops running (success or fail) or the specified time is exceeded.

[Vectorial1024]

The main challenge is how to test this feature, given that we would be "testing" Laravel Processes itself, which is obviously outside our concern.

Maybe this can be approached in another way?

[Vectorial1024]

Highly related to #5; we can't measure whether tasks are running if tasks don't even have any self-identification available.

Closing as duplicate (poor pre-planning).