Change icon when alarm is pressed

[JoshuaMoelans]

When the Teltonika tracker alarm button is pressed, currently the popup displays the details in red. We could also change the icon to match, by for example adding a red outline or a red overlay to the 'normal' selected tracker icon. An example is shown below.

The way to implement this would be to add another check in the onSelect (like the id.includes("sp_") ) but on the alarm event.

[JoshuaMoelans]

Additionally, one could change the icon for the user's own tracked icon to make it clear where they are. For this, the sent ID can be checked against the marker's received ID, and if they are the same, we generate the marker with another icon.